{"title":"Alloys \u0026 Solders","description":"","products":[{"product_id":"14kp-18kp-pink-gold-easier-flow-plumb-solders","title":"14KP \u0026 18KP Pink Gold Easier Flow Plumb Solders","description":"\u003cp\u003eThese plumb pink gold solders join 14K and 18K pink gold at the bench with a close color match to the parent metal. Pink gold solders are notoriously difficult to flow because of their high copper content, and this generation delivers \u003cem\u003eeasier flow compared to the previous generation of pink gold plumb solders\u003c\/em\u003e, along with improved pink color matching. The 14K pink plumb solders come in two tones, standard pink and a darker pink tone; the 18K pink plumb solders come in three flows: easy, medium, and hard.\u003c\/p\u003e\u003cp\u003ePlumb gold solders contain the same gold content as marked. Repair solders sit intentionally below the mark for ease of use, while these meet the plumb standard: 14K (.585) gold for the 14KP options and 18K (.750) gold for the 18KP options. \u003cstrong\u003ePlumb solders are intended for manufacturing applications where gold quality standards must be maintained.\u003c\/strong\u003e They flow at higher relative temperatures than repair solders.\u003c\/p\u003e\u003cp\u003eEvery option here is \u003cstrong\u003ecadmium free\u003c\/strong\u003e and sold by the DWT (pennyweight). Sheets weigh approximately 1 DWT each. There are 20 DWT to a troy ounce, and 1 DWT equals approximately 1.55 grams. All weights are approximate.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEasier flow compared to the previous generation of pink gold plumb solders\u003c\/li\u003e\n\u003cli\u003eImproved pink color matching\u003c\/li\u003e\n\u003cli\u003eCadmium free formulation\u003c\/li\u003e\n\u003cli\u003ePlumb standard gold content, 14K (.585) or 18K (.750) as marked\u003c\/li\u003e\n\u003cli\u003eSuitable for manufacturing work where gold quality standards must be maintained\u003c\/li\u003e\n\u003cli\u003eFive options across two karats, two pink tones and three flow temperatures\u003c\/li\u003e\n\u003cli\u003eSheet form, sold by the DWT\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAvailable Options\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003cth\u003eKarat\u003c\/th\u003e\n\u003cth\u003eFlow Temperature\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80P-554\u003c\/td\u003e\n\u003ctd\u003e14K Pink Easy\u003c\/td\u003e\n\u003ctd\u003e14KP\u003c\/td\u003e\n\u003ctd\u003e848°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80P-555\u003c\/td\u003e\n\u003ctd\u003e14K Pink Hard\u003c\/td\u003e\n\u003ctd\u003e14KP\u003c\/td\u003e\n\u003ctd\u003e904°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80P-556\u003c\/td\u003e\n\u003ctd\u003e18K Pink Easy\u003c\/td\u003e\n\u003ctd\u003e18KP\u003c\/td\u003e\n\u003ctd\u003e860°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80P-557\u003c\/td\u003e\n\u003ctd\u003e18K Pink Medium\u003c\/td\u003e\n\u003ctd\u003e18KP\u003c\/td\u003e\n\u003ctd\u003e870°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80P-558\u003c\/td\u003e\n\u003ctd\u003e18K Pink Hard\u003c\/td\u003e\n\u003ctd\u003e18KP\u003c\/td\u003e\n\u003ctd\u003e875°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Otto Frei","offers":[{"title":"14K Pink Easy","offer_id":43557692735702,"sku":"80P-554","price":206.77,"currency_code":"USD","in_stock":true},{"title":"14K Pink Hard","offer_id":47807090426070,"sku":"80P-555","price":206.77,"currency_code":"USD","in_stock":true},{"title":"18K Pink Easy","offer_id":47807090458838,"sku":"80P-556","price":266.74,"currency_code":"USD","in_stock":true},{"title":"18K Pink Medium","offer_id":47807090491606,"sku":"80P-557","price":266.74,"currency_code":"USD","in_stock":true},{"title":"18K Pink Hard","offer_id":47807090524374,"sku":"80P-558","price":266.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/14kp-and-18kp-pink-gold-easier-flow-plumb-solders-otto-frei.jpg?v=1719958950"},{"product_id":"18k-pink-solder-master-alloys-easy-medium-hard","title":"Pink Solder Alloys-For Making 18K Pink Solder-Easy, Medium \u0026 Hard","description":"\u003cp\u003eThese solder alloys are formulated to allow jewelers to make their own 18K pink solder in-house. \u003cstrong\u003eThese alloys contain no gold.\u003c\/strong\u003e To achieve 18K gold, simply combine 75% fine gold with 25% alloy by weight. Available in Easy, Medium, and Hard tempers to suit a range of soldering applications. Sold by the troy ounce (20 DWT).\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnables in-house production of 18K pink solder\u003c\/li\u003e\n\u003cli\u003eContains no gold — add your own fine gold to karat correctly\u003c\/li\u003e\n\u003cli\u003eSimple ratio: 75% fine gold + 25% alloy for 18K gold\u003c\/li\u003e\n\u003cli\u003eAvailable in three flow temperatures: Easy, Medium, and Hard\u003c\/li\u003e\n\u003cli\u003eSold by the troy ounce (20 DWT)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eKarat Target\u003c\/th\u003e\n\u003ctd\u003e18K Pink Gold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGold Content\u003c\/th\u003e\n\u003ctd\u003eNone — alloy only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMixing Ratio\u003c\/th\u003e\n\u003ctd\u003e75% fine gold + 25% alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold By\u003c\/th\u003e\n\u003ctd\u003eTroy ounce (20 DWT)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eAvailable Options\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e846-13SA\u003c\/td\u003e\n\u003ctd\u003e18K Pink Hard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e846-14SA\u003c\/td\u003e\n\u003ctd\u003e18K Pink Medium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e846-15SA\u003c\/td\u003e\n\u003ctd\u003e18K Pink Easy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Otto Frei","offers":[{"title":"18K Pink Hard","offer_id":47561549512918,"sku":"846-13SA","price":21.4,"currency_code":"USD","in_stock":true},{"title":"18K Pink Medium","offer_id":47557337481430,"sku":"846-14SA","price":22.7,"currency_code":"USD","in_stock":true},{"title":"18K Pink Easy","offer_id":43557692899542,"sku":"846-15SA","price":24.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/pink-solder-alloys-for-making-18k-pink-solder-easy-medium-and-hard-otto-frei.jpg?v=1719958951"},{"product_id":"solderless-round-laser-redi-prong-kits","title":"Solderless Round Laser Redi-Prong Kits","description":"\u003cp\u003eSolderless Round Laser Redi-Prong Kits offer a convenient, ready-to-use solution for setting and replacing prongs without the need for soldering. Available in three kit configurations, these Redi-Prongs are designed for professional jewelers working in 14K, 18K, or platinum. Each kit provides a selection of round laser Redi-Prongs packaged in quantity, allowing bench jewelers to tackle prong repair and replacement efficiently.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSolderless design for quick, efficient prong repair and replacement\u003c\/li\u003e\n\u003cli\u003eRound laser Redi-Prong style for a precise, finished look\u003c\/li\u003e\n\u003cli\u003eAvailable in 14K Yellow \u0026amp; White, 18K Yellow \u0026amp; White, and Platinum\u003c\/li\u003e\n\u003cli\u003eKits include multiple pieces for high-volume bench work\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAvailable Options\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eMetal \u0026amp; Karat\u003c\/th\u003e\n\u003cth\u003eQuantity\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e84B-300A\u003c\/td\u003e\n\u003ctd\u003ePlatinum\u003c\/td\u003e\n\u003ctd\u003e65 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e840-300A\u003c\/td\u003e\n\u003ctd\u003e14K Yellow \u0026amp; White\u003c\/td\u003e\n\u003ctd\u003e300 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e84C-300A\u003c\/td\u003e\n\u003ctd\u003e18K Yellow \u0026amp; White\u003c\/td\u003e\n\u003ctd\u003e300 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Redi-Prongs","offers":[{"title":"Platinum 65pcs","offer_id":47807127224534,"sku":"84B-300A","price":154.0,"currency_code":"USD","in_stock":true},{"title":"18K Yellow \u0026 White 300pcs","offer_id":47807127191766,"sku":"84C-300A","price":725.22,"currency_code":"USD","in_stock":true},{"title":"14K Yellow \u0026 White 500pcs","offer_id":43578959069398,"sku":"840-300A","price":490.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/solderless-round-laser-redi-prong-kits-otto-frei.jpg?v=1719958734"},{"product_id":"round-redi-prong-kits-14k-18k-platinum-torch","title":"Round Redi-Prong Kits","description":"\u003cp\u003eRe-tipping a worn prong goes faster when the solder is already on the piece. Redi-Prongs are precision-sized sections of precious metal with solder pre-applied for torch work, and these round kits let a bench jeweler re-tip prongs on round diamonds of any size. They are one of the great labor-saving products to reach the professional bench since the flex shaft.\u003c\/p\u003e\u003cp\u003eThe kits come in 14K Yellow and White, 18K Yellow and White, and Platinum. Each is sized across diamond weights from .01ct through 1ct and above, with the assortment weighted toward the smaller sizes a bench sees most often, so there is a piece to match melee and larger stones alike.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSolder pre-applied for use with a jeweler's torch, so no separate solder prep is needed\u003c\/li\u003e\n\u003cli\u003eRound prong shape for re-tipping round diamonds of all sizes\u003c\/li\u003e\n\u003cli\u003ePrecision-sized pieces spanning diamond weights from .01ct–1ct and above\u003c\/li\u003e\n\u003cli\u003eOffered in 14K Yellow and White, 18K Yellow and White, and Platinum\u003c\/li\u003e\n\u003cli\u003eEach kit holds a multi-size assortment weighted toward the most commonly used smaller sizes\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAvailable Options\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eKit Option\u003c\/th\u003e\n\u003cth\u003eQuantity\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e84B-300\u003c\/td\u003e\n\u003ctd\u003ePlatinum\u003c\/td\u003e\n\u003ctd\u003e65 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e84C-300\u003c\/td\u003e\n\u003ctd\u003e18K Yellow \u0026amp; White\u003c\/td\u003e\n\u003ctd\u003e300 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e840-300\u003c\/td\u003e\n\u003ctd\u003e14K Yellow \u0026amp; White\u003c\/td\u003e\n\u003ctd\u003e500 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eWhat you get:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e14K Yellow \u0026amp; White Kit (840-300), 500 pcs total\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003e65 pcs 14K Yellow, size .01–.20ct\u003c\/li\u003e\n\u003cli\u003e30 pcs 14K Yellow, size .20–.50ct\u003c\/li\u003e\n\u003cli\u003e20 pcs 14K Yellow, size .50–1ct\u003c\/li\u003e\n\u003cli\u003e10 pcs 14K Yellow, size 1ct+\u003c\/li\u003e\n\u003cli\u003e65 pcs 14K White, size .01–.20ct\u003c\/li\u003e\n\u003cli\u003e30 pcs 14K White, size .20–.50ct\u003c\/li\u003e\n\u003cli\u003e20 pcs 14K White, size .50–1ct\u003c\/li\u003e\n\u003cli\u003e10 pcs 14K White, size 1ct+\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e18K Yellow \u0026amp; White Kit (84C-300), 300 pcs total\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003e65 pcs 18K Yellow, size .01–.20ct\u003c\/li\u003e\n\u003cli\u003e30 pcs 18K Yellow, size .20–.50ct\u003c\/li\u003e\n\u003cli\u003e20 pcs 18K Yellow, size .50–1ct\u003c\/li\u003e\n\u003cli\u003e10 pcs 18K Yellow, size 1ct+\u003c\/li\u003e\n\u003cli\u003e65 pcs 18K White, size .01–.20ct\u003c\/li\u003e\n\u003cli\u003e30 pcs 18K White, size .20–.50ct\u003c\/li\u003e\n\u003cli\u003e20 pcs 18K White, size .50–1ct\u003c\/li\u003e\n\u003cli\u003e10 pcs 18K White, size 1ct+\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlatinum Kit (84B-300), 65 pcs total\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003e27 pcs Platinum, size .01–.20ct\u003c\/li\u003e\n\u003cli\u003e18 pcs Platinum, size .20–.50ct\u003c\/li\u003e\n\u003cli\u003e12 pcs Platinum, size .50–1ct\u003c\/li\u003e\n\u003cli\u003e8 pcs Platinum, size 1ct+\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Redi-Prongs","offers":[{"title":"Platinum 65pcs","offer_id":47807127355606,"sku":"84B-300","price":154.0,"currency_code":"USD","in_stock":true},{"title":"18K Yellow \u0026 White 300pcs","offer_id":47807127322838,"sku":"84C-300","price":76343.95,"currency_code":"USD","in_stock":true},{"title":"14K Yellow \u0026 White 500pcs","offer_id":43578959200470,"sku":"840-300","price":822.67,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/round-redi-prong-kits-otto-frei.jpg?v=1719958733"},{"product_id":"v-prong-redi-prong-kits-pre-applied-solder","title":"V-Prong Redi-Prong Kits","description":"\u003cp\u003eRe-tip prongs quickly and easily on all size diamonds with V-Prong Redi-Prongs — one of the greatest labor-saving products for the professional bench jeweler since the invention of the flex shaft. These precision-sized pieces of precious metal come with pre-applied solder, making the job of re-tipping prongs on diamonds faster and more consistent. Designed specifically in a \u003cstrong\u003eV-shape\u003c\/strong\u003e, these Redi-Prongs are ideal for re-tipping prongs on all size diamonds using a jeweler's torch. Redi-Prongs are available in a variety of shapes, including Princess, V-Prong, Baguette, and Channel — these kits contain the V-shape style.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eV-shape design for re-tipping prongs on all size diamonds\u003c\/li\u003e\n\u003cli\u003ePre-applied solder eliminates the need to apply solder separately\u003c\/li\u003e\n\u003cli\u003ePrecision-sized pieces for consistent, professional results\u003c\/li\u003e\n\u003cli\u003eCompatible with standard jeweler's torch application\u003c\/li\u003e\n\u003cli\u003eAvailable in 14K Yellow \u0026amp; White, 18K Yellow \u0026amp; White, and Platinum\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eShape\u003c\/th\u003e\n\u003ctd\u003eV-Prong\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSolder\u003c\/th\u003e\n\u003ctd\u003ePre-applied\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication Method\u003c\/th\u003e\n\u003ctd\u003eJeweler's torch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUse\u003c\/th\u003e\n\u003ctd\u003eRe-tipping prongs on all size diamonds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAvailable Options\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eMetal\u003c\/th\u003e\n\u003cth\u003eQuantity\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e840-350\u003c\/td\u003e\n\u003ctd\u003e14K Yellow \u0026amp; White\u003c\/td\u003e\n\u003ctd\u003e120 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e84B-350\u003c\/td\u003e\n\u003ctd\u003ePlatinum\u003c\/td\u003e\n\u003ctd\u003e40 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cp\u003ePart numbers and kit contents reflected here are based on available product data. A three-kit option (including an 18K Yellow \u0026amp; White 55 pcs kit, part # 841-350) may be available — contact Otto Frei for current inventory and pricing.\u003c\/p\u003e","brand":"Redi-Prongs","offers":[{"title":"Platinum 40pcs","offer_id":47807127683286,"sku":"84B-350","price":281.23,"currency_code":"USD","in_stock":false},{"title":"14K Yellow \u0026 White 120pcs","offer_id":43578959298774,"sku":"840-350","price":880.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/v-prong-redi-prong-kits-otto-frei.jpg?v=1719958732"},{"product_id":"baguette-redi-prong-kits-14k-platinum","title":"Baguette Redi-Prong Kits","description":"\u003cp\u003eRedi-Prongs are precision-formed pieces of precious metal with pre-applied solder, designed to make re-tipping prongs on diamonds faster and easier than traditional methods. These \u003cstrong\u003eBaguette Redi-Prongs\u003c\/strong\u003e are specifically shaped for baguette-cut stones and are used with a jeweler's torch. Two kit options are available: a 14K Yellow \u0026amp; White gold kit and a Platinum kit, each containing multiple pieces ready for bench use.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePrecision-sized baguette-shaped prong tips for accurate re-tipping\u003c\/li\u003e\n\u003cli\u003ePre-applied solder eliminates the need to separately apply solder during the re-tipping process\u003c\/li\u003e\n\u003cli\u003eCompatible with all size diamonds requiring baguette-style prong work\u003c\/li\u003e\n\u003cli\u003eUsed with a jeweler's torch for professional bench application\u003c\/li\u003e\n\u003cli\u003eAvailable in 14K Yellow \u0026amp; White gold or Platinum\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eShape\u003c\/th\u003e\n\u003ctd\u003eBaguette\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSolder\u003c\/th\u003e\n\u003ctd\u003ePre-applied\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication Method\u003c\/th\u003e\n\u003ctd\u003eJeweler's torch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAvailable Options\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eMetal\u003c\/th\u003e\n\u003cth\u003eQuantity\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e840-500\u003c\/td\u003e\n\u003ctd\u003e14K Yellow \u0026amp; White\u003c\/td\u003e\n\u003ctd\u003e50 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e84B-500\u003c\/td\u003e\n\u003ctd\u003ePlatinum\u003c\/td\u003e\n\u003ctd\u003e40 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Redi-Prongs","offers":[{"title":"Platinum 40pcs","offer_id":47807127584982,"sku":"84B-500","price":256.82,"currency_code":"USD","in_stock":true},{"title":"14K Yellow \u0026 White 50pcs","offer_id":43578959397078,"sku":"840-500","price":822.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/baguette-redi-prong-kits-otto-frei.jpg?v=1719958733"},{"product_id":"channel-redi-prong-kits-14k-6pc","title":"Channel Redi-Channel Kits","description":"\u003cp\u003eChannel Redi-Prongs are precision-cut pieces of precious metal with pre-applied solder, designed to make re-tipping prongs on all sizes of diamonds faster and easier at the bench. These Channel-shape Redi-Prongs are applied using a jeweler's torch, delivering consistent, professional results with significantly less labor than traditional re-tipping methods. Each kit contains 6 pieces of Channel Redi-Prongs with solder included.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eChannel shape design for re-tipping channel-set prongs\u003c\/li\u003e\n\u003cli\u003ePre-applied solder eliminates the need to apply solder separately\u003c\/li\u003e\n\u003cli\u003eCompatible with all sizes of diamonds\u003c\/li\u003e\n\u003cli\u003eApplied using a jeweler's torch\u003c\/li\u003e\n\u003cli\u003ePrecision-sized pieces for consistent, repeatable results\u003c\/li\u003e\n\u003cli\u003eSignificant labor-saving solution for professional bench jewelers\u003c\/li\u003e\n\u003cli\u003eAvailable in 14K Yellow Gold and 14K White Gold\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eShape\u003c\/th\u003e\n\u003ctd\u003eChannel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKarat\u003c\/th\u003e\n\u003ctd\u003e14K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSolder\u003c\/th\u003e\n\u003ctd\u003ePre-applied\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication Method\u003c\/th\u003e\n\u003ctd\u003eJeweler's torch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePieces per Kit\u003c\/th\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAvailable Options\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eMetal Color\u003c\/th\u003e\n\u003cth\u003eQuantity\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e840-400\u003c\/td\u003e\n\u003ctd\u003e14K Yellow Gold\u003c\/td\u003e\n\u003ctd\u003e6 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e841-400\u003c\/td\u003e\n\u003ctd\u003e14K White Gold\u003c\/td\u003e\n\u003ctd\u003e6 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Redi-Prongs","offers":[{"title":"14K Yellow 6pcs","offer_id":43578959528150,"sku":"840-400","price":822.67,"currency_code":"USD","in_stock":true},{"title":"14K White 6pcs","offer_id":47807127814358,"sku":"841-400","price":822.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/channel-redi-channel-kits-otto-frei.jpg?v=1719958733"},{"product_id":"14k-gold-plumb-solder-kit","title":"14K Gold Plumb Solder Kit","description":"\u003cp\u003eCover a full fabrication sequence at the bench with one set of torch solders. This 14K gold plumb solder kit supplies four distinct gold solders, giving jewelers the flow temperature variety needed for multi-step work. Each solder strip is approximately one third of a pennyweight (1\/3 DWT) and is ready for torch use.\u003c\/p\u003e\u003cp\u003eThe kit holds one piece each of \u003cstrong\u003e14K Yellow Gold Easy Flow\u003c\/strong\u003e, \u003cstrong\u003e14K Yellow Gold Medium Flow\u003c\/strong\u003e, \u003cstrong\u003e14K Yellow Gold Hard Flow\u003c\/strong\u003e, and \u003cstrong\u003e14K White Gold Easy Flow\u003c\/strong\u003e. Together these four solders cover the range of joining operations in a typical fabrication sequence, from structural assembly through final detail work.\u003c\/p\u003e\u003cp\u003eThese are \u003cstrong\u003eplumb gold solders\u003c\/strong\u003e, meaning each solder matches the karat of the metal it is meant to join. Plumb solders are the correct choice for constructing new jewelry, where karat integrity throughout the piece is required. They differ from repair solders, which carry a lower gold content and flow at lower temperatures, making repair solders the right choice for work on finished or previously assembled pieces.\u003c\/p\u003e\u003cp\u003eEasy, medium, and hard describe the relative flow temperatures among the three yellow solders: easy flow melts first, then medium flow, then hard flow. That progression lets a jeweler make several joins in sequence without remelting earlier ones, a fundamental technique in fabricated construction.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFour solder types in one set: 14K yellow easy, 14K yellow medium, 14K yellow hard, and 14K white easy flow\u003c\/li\u003e\n\u003cli\u003eEach piece weighs approximately 1\/3 DWT\u003c\/li\u003e\n\u003cli\u003ePlumb gold solders matched to 14K for manufacturing integrity\u003c\/li\u003e\n\u003cli\u003eHard solders formulated for torch application\u003c\/li\u003e\n\u003cli\u003eGraduated flow temperatures allow sequential joining without disturbing earlier joins\u003c\/li\u003e\n\u003cli\u003eSuited to new jewelry fabrication and construction\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eWhat you get:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1 piece, 14K Yellow Gold Easy Flow solder, approximately 1\/3 DWT\u003c\/li\u003e\n\u003cli\u003e1 piece, 14K Yellow Gold Medium Flow solder, approximately 1\/3 DWT\u003c\/li\u003e\n\u003cli\u003e1 piece, 14K Yellow Gold Hard Flow solder, approximately 1\/3 DWT\u003c\/li\u003e\n\u003cli\u003e1 piece, 14K White Gold Easy Flow solder, approximately 1\/3 DWT\u003c\/li\u003e\n\u003c\/ul\u003e\u003cul\u003e\n\u003cli\u003ePlumb gold solders are intended for constructing new pieces rather than repair work.\u003c\/li\u003e\n\u003cli\u003eFor repair work on existing jewelry, use repair grade gold solders, which carry a lower gold content and flow at lower temperatures than plumb solders.\u003c\/li\u003e\n\u003cli\u003eEasy flow melts before medium flow, and medium flow melts before hard flow, so plan the join sequence accordingly.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43581629399254,"sku":"800-555","price":280.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/14k-gold-plumb-solder-kit-otto-frei.jpg?v=1719957486"},{"product_id":"14k-yellow-gold-easy-paste-plumb-solder-syringe","title":"Gold Easy Flow Plumb Paste Solder Syringe","description":"\u003cp\u003eLay solder and flux onto a joint in one controlled step at the bench. This 14K yellow easy flow cadmium-free paste solder combines \u003cstrong\u003e14K yellow plumb gold solder\u003c\/strong\u003e with a special paste flux in a syringe, and each syringe holds approximately 1 pennyweight (DWT) of the paste flux and gold mixture.\u003c\/p\u003e\u003cp\u003ePlumb gold means the solder itself is genuinely 14K, unlike repair solders that contain lower gold content than the metal being worked. The syringe delivery system allows precise, controlled application of the solder and flux mixture directly to the joint, which reduces waste and improves placement accuracy. The cadmium-free formula makes it a safer choice for professional studio and bench use.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGenuine 14K plumb gold solder that matches the karat of the work\u003c\/li\u003e\n\u003cli\u003eCadmium-free formula for safer handling\u003c\/li\u003e\n\u003cli\u003ePre-mixed with a special paste flux, so no separate flux application is needed\u003c\/li\u003e\n\u003cli\u003eSyringe format enables precise, easy application\u003c\/li\u003e\n\u003cli\u003eEasy flow grade for lower-temperature joining\u003c\/li\u003e\n\u003cli\u003eMelts at 1285°F and flows at 1325°F\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePlumb solder contains the same karat gold as the metal it is used on, not a lower-content repair solder.\u003c\/li\u003e\n\u003cli\u003eThe listed weight of approximately 1 DWT reflects the combined paste flux and gold mixture, not pure gold weight alone.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43581629694166,"sku":"800-301","price":152.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/14ky-easy-paste-plumb-solder-otto-frei.jpg?v=1719957485"},{"product_id":"platinum-935c-paste-solder-syringe","title":"Platinum 935C Paste Solder","description":"\u003cp\u003ePlatinum 935C Paste Solder is a ready-to-use solder formulated for platinum work, offering the lowest flow temperature available for platinum-compatible solders at \u003cstrong\u003e935°C (1715°F)\u003c\/strong\u003e. Supplied in a convenient syringe, it combines a traditional platinum-use solder with paste flux in a single, easy-to-apply format—no separate flux application required.\u003c\/p\u003e\u003cp\u003eThe alloy contains a mixture of silver and gold with less than 3% platinum. The gross weight of the syringe, including paste flux, is approximately \u003cstrong\u003e1 DWT\u003c\/strong\u003e.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eLowest flow temperature of any solder compatible with platinum use — \u003cstrong\u003e935°C (1715°F)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSolder and paste flux combined in one syringe for streamlined application\u003c\/li\u003e\n\u003cli\u003eTraditional formulation trusted for platinum jewelry work\u003c\/li\u003e\n\u003cli\u003ePrecise syringe delivery minimizes waste and improves placement accuracy\u003c\/li\u003e\n\u003cli\u003eContains a mixture of silver, gold, and less than 3% platinum\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFlow Temperature\u003c\/th\u003e\n\u003ctd\u003e935°C (1715°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eForm\u003c\/th\u003e\n\u003ctd\u003ePaste solder with flux, in syringe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAlloy Content\u003c\/th\u003e\n\u003ctd\u003eSilver, gold, and less than 3% platinum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGross Weight (with flux)\u003c\/th\u003e\n\u003ctd\u003eApproximately 1 DWT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlux Included\u003c\/th\u003e\n\u003ctd\u003eYes—paste flux pre-mixed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43581630972118,"sku":"80B-935","price":60.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/platinum-935c-paste-solder-otto-frei.jpg?v=1719957481"},{"product_id":"titanium-laser-welder-wire-29-gauge","title":"Laser Welder Wire Titanium 29 Gauge","description":"\u003cp\u003eTitanium laser welder wire designed specifically for use with laser welding equipment. Available in 29 gauge, this wire is sold in convenient 25-foot lengths, providing professional jewelers and metalsmiths with a reliable supply for laser welding applications.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFormulated specifically for use with laser welders\u003c\/li\u003e\n\u003cli\u003e29 gauge diameter for precise laser welding work\u003c\/li\u003e\n\u003cli\u003eSold in 25-foot lengths\u003c\/li\u003e\n\u003cli\u003eTitanium material construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eTitanium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGauge\u003c\/th\u003e\n\u003ctd\u003e29 gauge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003ctd\u003e25 feet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eLaser welding\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43581631267030,"sku":"828-029","price":15.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/laser-welder-wire-titanium-29-gauge-otto-frei.jpg?v=1719957481"},{"product_id":"14k-yellow-white-princess-redi-prong-kit-40-pieces","title":"14K Yellow \u0026 White Princess Redi-Prong Kit 40 pieces","description":"\u003cp\u003eRe-tip prongs quickly and easily on all size diamonds with Redi-Prongs — truly one of the greatest labor-saving products for the professional bench jeweler since the invention of the flex shaft. These \u003cstrong\u003e14K Yellow \u0026amp; White Princess Redi-Prongs\u003c\/strong\u003e are precision-sized pieces of precious metal with pre-applied solder, making the job of re-tipping prongs on diamonds faster and more consistent. Designed specifically for Princess-cut stones, these prongs are applied using a jeweler's torch for a clean, professional result every time.\u003c\/p\u003e\u003cp\u003eRedi-Prongs are available in a variety of shapes and sizes to suit different stone cuts and setting styles, including Princess shape, V-Prong shape, Baguette shape, and Channel shape. This kit includes \u003cstrong\u003e40 pieces\u003c\/strong\u003e and combines both 14K yellow and 14K white options, giving bench jewelers the flexibility to match a wide range of jewelry repairs in a single convenient set.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePrecision-sized precious metal prong tips with pre-applied solder\u003c\/li\u003e\n\u003cli\u003eDesigned for re-tipping prongs on Princess-cut diamonds of all sizes\u003c\/li\u003e\n\u003cli\u003eCombined 14K yellow and 14K white metals in one kit\u003c\/li\u003e\n\u003cli\u003eApplied with a jeweler's torch for reliable, professional results\u003c\/li\u003e\n\u003cli\u003eStreamlines bench repair workflow — significantly reduces re-tipping time\u003c\/li\u003e\n\u003cli\u003eKit contains 40 pieces total\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMetal\u003c\/th\u003e\n\u003ctd\u003e14K Yellow \u0026amp; White\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProng Shape\u003c\/th\u003e\n\u003ctd\u003ePrincess\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSolder\u003c\/th\u003e\n\u003ctd\u003ePre-applied\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack Quantity\u003c\/th\u003e\n\u003ctd\u003e40 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication Method\u003c\/th\u003e\n\u003ctd\u003eJeweler's torch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eThese Redi-Prongs are intended for use by professional bench jewelers experienced with torch soldering techniques. Suitable for re-tipping prongs on diamonds of all sizes when set in Princess-style settings.\u003c\/p\u003e","brand":"Redi-Prongs","offers":[{"title":"Default Title","offer_id":43581631660246,"sku":"840-450","price":238.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/14k-yellow-and-white-princess-redi-prong-kit-40-pieces-otto-frei.jpg?v=1719957481"},{"product_id":"silver-wire-solder-kit","title":"Silver Wire Solder Kit","description":"\u003cp\u003eSilver wire solder for joining silver at the bench, supplied as a three grade sampler so one package covers both fabrication and repair. The kit offers a practical sampling of three flowing silver wire solders: Easy, Medium, and Hard, in a single package. Each length of wire weighs approximately 1.66 pennyweights, for a combined total of approximately 5 dwt (1\/4 troy ounce). It suits jewelers who want to keep all three flow grades on hand for a range of fabrication and repair applications.\u003c\/p\u003e\n\u003cp\u003eThe terms \u003cstrong\u003eExtra Easy, Easy, Medium,\u003c\/strong\u003e and \u003cstrong\u003eHard\u003c\/strong\u003e describe the \u003cem\u003erelative temperature flow points\u003c\/em\u003e between solders of one type or brand. Extra Easy has the lowest flow point, followed by Easy, then Medium, then Hard. This labeling system generally holds true across silver solder brands, though differences between manufacturers do exist: one maker's Medium may flow at the same temperature as another maker's Hard.\u003c\/p\u003e\n\u003cp\u003eGenerally, the higher the flow point temperature, the higher the silver content of the solder. Higher silver content improves color match to silver and theoretically produces a stronger bond.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich grade should you use?\u003c\/strong\u003e When manufacturing, start with the highest temperature (Hard) solder so that subsequent repairs can be made with lower temperature grades. When doing repairs, use the lowest temperature (Extra Easy or Easy) solder available, since the solder previously used is unknown.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIncludes Easy, Medium and Hard silver wire solder grades in one kit\u003c\/li\u003e\n\u003cli\u003eEach wire length weighs approximately 1.66 pennyweights\u003c\/li\u003e\n\u003cli\u003eTotal kit weight approximately 5 dwt (1\/4 troy ounce)\u003c\/li\u003e\n\u003cli\u003eGraduated flow points support multi-stage fabrication and repair workflows\u003c\/li\u003e\n\u003cli\u003eHigher flow point grades offer higher silver content and improved color match to silver\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cp\u003eWhat you get:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 length Easy silver wire solder (Part 804-401), 1325°F (719°C) flow point\u003c\/li\u003e\n\u003cli\u003e1 length Medium silver wire solder (Part 804-402), 1390°F (755°C) flow point\u003c\/li\u003e\n\u003cli\u003e1 length Hard silver wire solder (Part 804-403), 1475°F (802°C) flow point\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSolder is supplied in wire form. Flow points are the relative flow temperatures of the three grades in this kit.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43581631987926,"sku":"804-444","price":31.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/silver-wire-solder-kit-otto-frei.jpg?v=1719957481"},{"product_id":"silver-solder-sheet-kit","title":"Silver Solder Sheet Kit","description":"\u003cp\u003eA silver solder sheet kit puts three flow points on the bench at once, so a fabrication run and a later repair can each get the grade it needs. The Silver Solder Sheet Kit from Harmony is a practical starter and reference set for jewelers and metalsmiths working with silver, holding one small sheet each of three cadmium-free silver solders that span a range of flow points.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eIncludes three cadmium-free silver solder sheets covering soft, medium and medium-hard flow points\u003c\/li\u003e\n\u003cli\u003eTotal weight of approximately 15 pennyweights across all three sheets\u003c\/li\u003e\n\u003cli\u003eSheet format cuts and portions easily at the bench\u003c\/li\u003e\n\u003cli\u003eCadmium-free formulation for safer studio use\u003c\/li\u003e\n\u003cli\u003eSpans a practical flow point range of 1260°F to 1375°F\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eWhat you get:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e804-405, Soft\u003c\/strong\u003e, flow point 1260°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e804-406, Medium\u003c\/strong\u003e, flow point 1295°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e804-407, Medium-Hard\u003c\/strong\u003e, flow point 1375°F\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSilver solder grades, \u003cstrong\u003eExtra Soft, Soft, Medium, Medium-Hard\u003c\/strong\u003e and \u003cstrong\u003eHard\u003c\/strong\u003e, describe the \u003cem\u003erelative temperature flow points\u003c\/em\u003e within a solder line. Extra Soft, also called Extra Easy, flows at the lowest temperature, with each successive grade flowing at a progressively higher temperature. Generally, a higher flow point corresponds to a higher silver content, which improves color match to silver and can contribute to a stronger bond.\u003c\/p\u003e\u003cp\u003eFlow point temperatures vary between manufacturers. One maker's Medium may flow at the same temperature as another maker's Hard, so always verify flow points when mixing solder brands.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFor fabrication:\u003c\/strong\u003e Use the highest temperature (hardest) solder available so that subsequent repairs can be made with lower temperature solders without disturbing existing seams. \u003cstrong\u003eFor repairs:\u003c\/strong\u003e Use the lowest temperature (softest) solder appropriate for the job, since the solder grade used previously is often unknown.\u003c\/p\u003e","brand":"Harmony","offers":[{"title":"Default Title","offer_id":43581633495254,"sku":"804-415","price":115.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/silver-solder-sheet-kit-otto-frei.jpg?v=1719957481"},{"product_id":"white-9-18k-investment-casting-master-alloy-nickel-based-per-troy-ounce","title":"White 9-18 Investment Casting Master Alloy-Per Troy Ounce (20DWT)","description":"\u003cp\u003eThis nickel-based white master alloy — previously called \u003cem\u003eWhite Century\u003c\/em\u003e — is formulated for investment casting and fabrication of 9K–18K white gold. Specially engineered for peak performance in enclosed or automated casting equipment, it contains copper, nickel, and zinc, plus a small amount of silicon as a deoxidizer. Additional proprietary metals are present in the formulation that are not listed in the published composition. Sold by the troy ounce (20 pennyweight \/ 31.1 grams).\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNickel-based alloy suitable for 9K–18K white gold casting and fabrication\u003c\/li\u003e\n\u003cli\u003eProduces a white finished color\u003c\/li\u003e\n\u003cli\u003eOptimized for enclosed and automated casting equipment\u003c\/li\u003e\n\u003cli\u003eContains silicon as a deoxidizer for cleaner melts\u003c\/li\u003e\n\u003cli\u003ePreviously marketed as White Century alloy\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eAlloy Base\u003c\/th\u003e\n\u003ctd\u003eNickel-based\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition – Copper (Cu)\u003c\/th\u003e\n\u003ctd\u003e57.7%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition – Zinc (Zn)\u003c\/th\u003e\n\u003ctd\u003e18.1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition – Nickel (Ni)\u003c\/th\u003e\n\u003ctd\u003e24.2%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAdditional Components\u003c\/th\u003e\n\u003ctd\u003eSilicon (deoxidizer); proprietary metals not disclosed in composition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKarat Range\u003c\/th\u003e\n\u003ctd\u003e9K – 18K white gold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold By\u003c\/th\u003e\n\u003ctd\u003eTroy ounce (20 DWT \/ 31.1 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003e846-100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eUsage Instructions\u003c\/h3\u003e\n\u003cp\u003ePre-alloy all alloy and fine gold together with aggressive stirring and fluxing to ensure a uniform mixture before casting.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep 1 – Pre-Alloying Temperature (fine gold + alloy):\u003c\/strong\u003e 1050°C – 1060°C \/ 1922°F – 1940°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep 2 – Casting Temperature for 9K–10K alloyed grain:\u003c\/strong\u003e 1030°C – 1040°C \/ 1886°F – 1904°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep 3 – Casting Temperature for 14K–18K alloyed grain:\u003c\/strong\u003e 1000°C – 1020°C \/ 1832°F – 1868°F\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eFlask Temperature:\u003c\/strong\u003e 580°C – 700°C \/ 1076°F – 1292°F, depending on flask size, karat, and jewelry type.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFluxing:\u003c\/strong\u003e Fluxing white gold is critical for collecting oxides. Boric acid is the recommended flux. Do not use carbon fluxes or refining fluxes such as soda ash or saltpeter. Avoid flux in bottom-pour automatic casting units.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuench Time:\u003c\/strong\u003e 10–15 minutes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInvestment Removal:\u003c\/strong\u003e Most standard investment removers will successfully remove investment powder. Aggressive acids cause stress corrosion and surface damage and are not recommended.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eScrap Reuse:\u003c\/strong\u003e A 70% fresh–30% scrap mix is recommended. White gold alloy has approximately one-third the reusability of yellow gold alloys.\u003c\/p\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMelt temperature may vary depending on casting unit type.\u003c\/li\u003e\n\u003cli\u003eProprietary metals are present in the formulation and are not included in the published composition percentages.\u003c\/li\u003e\n\u003cli\u003eThis product contains nickel. See California Proposition 65 warnings as applicable.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43581633790166,"sku":"846-100","price":7.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/white-9-18-investment-casting-master-alloy-per-troy-ounce-20dwt-otto-frei.jpg?v=1719957479"},{"product_id":"ultra-white-10-18k-nickel-based-fabrication-casting-master-alloy-per-troy-ounce","title":"Ultra White For Making 10-18 White Multi-Purpose Alloy-Per Troy Ounce (20 DWT)","description":"\u003cp\u003eThis ultra white fabrication alloy is nickel-based and contains no gold and no silver. Designed as a multi-purpose master alloy for both casting and fabrication applications, it is suitable for making white gold alloys from 10K through 18K. Sold by the troy ounce (20 DWT).\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eNote: There are proprietary metals in the formulation that are not included in the composition listing below.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNickel-based multi-purpose alloy for casting and fabrication\u003c\/li\u003e\n\u003cli\u003eCompatible with white gold alloys from 10K to 18K\u003c\/li\u003e\n\u003cli\u003eContains no gold and no silver\u003c\/li\u003e\n\u003cli\u003ePre-alloying with aggressive stirring and fluxing recommended for a uniform mixture\u003c\/li\u003e\n\u003cli\u003eBoric acid is the recommended flux — do not use carbon fluxes or refining fluxes such as soda ash or saltpeter\u003c\/li\u003e\n\u003cli\u003eAvoid flux in bottom-pour automatic casting units\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition – Copper (Cu)\u003c\/th\u003e\n\u003ctd\u003e63%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition – Zinc (Zn)\u003c\/th\u003e\n\u003ctd\u003e17%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition – Nickel (Ni)\u003c\/th\u003e\n\u003ctd\u003e19.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition – Silver (Ag)\u003c\/th\u003e\n\u003ctd\u003e0%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eContains Gold\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBase Metal\u003c\/th\u003e\n\u003ctd\u003eNickel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKarat Range\u003c\/th\u003e\n\u003ctd\u003e10K – 18K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eCasting and fabrication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold By\u003c\/th\u003e\n\u003ctd\u003eTroy ounce (20 DWT)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eUsage Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-Alloying (Fine gold + alloy):\u003c\/strong\u003e Heat to 1090°C – 1100°C \/ 1994°F – 2030°F with aggressive stirring and fluxing to ensure a uniform mixture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCasting Temperature for 10K Alloyed Grain:\u003c\/strong\u003e 1085°C – 1105°C \/ 1985°F – 2021°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCasting Temperature for 14K Alloyed Grain:\u003c\/strong\u003e 1025°C – 1045°C \/ 1877°F – 1913°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCasting Temperature for 18K Alloyed Grain:\u003c\/strong\u003e 995°C – 1015°C \/ 1832°F – 1859°F\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMelt temperature may vary\u003c\/strong\u003e depending on the type of casting unit used.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlask Temperature:\u003c\/strong\u003e Recommended range is 540°C – 675°C \/ 1004°F – 1247°F, depending on flask size, karat, and jewelry type.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuench Time:\u003c\/strong\u003e 25 minutes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInvestment Removal:\u003c\/strong\u003e Most standard investment removers will successfully remove investment powder. Aggressive acids are not recommended, as they cause stress corrosion and surface damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScrap Reuse:\u003c\/strong\u003e A 70% fresh – 30% scrap mix is recommended. White gold alloy has approximately one-third the reusability of yellow gold alloys.\u003c\/li\u003e\n\u003cli\u003eThis product contains nickel. See applicable Proposition 65 warnings.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43581634052310,"sku":"846-103","price":8.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/ultra-white-for-making-10-18-white-multi-purpose-alloy-per-troy-ounce-20-dwt-otto-frei.jpg?v=1719957479"},{"product_id":"dark-yellow-casting-master-alloy-9k-14k","title":"Dark Yellow 9-14 Investment Casting Master Alloy For Stone In Place Casting-Per Troy Ounce (20 DWT)","description":"\u003cp\u003eThis \u003cstrong\u003eDark Yellow Investment Casting Master Alloy\u003c\/strong\u003e is formulated for alloying with pure gold to produce 9K to 14K casting alloy, with specific performance characteristics suited for \u003cstrong\u003estone-in-place casting\u003c\/strong\u003e. Sold per troy ounce (20 pennyweights \/ 31.1 grams), this master alloy contains no gold — it is designed to be combined with fine gold to achieve the desired karat and color.\u003c\/p\u003e\u003cp\u003eThe dark yellow color profile makes it well suited for warm-toned gold alloys in the 9K to 14K range. Note that the formulation may include proprietary metals, silicon, and deoxidizers beyond the listed composition.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEngineered for \u003cstrong\u003estone-in-place investment casting\u003c\/strong\u003e applications\u003c\/li\u003e\n\u003cli\u003eProduces \u003cstrong\u003edark yellow\u003c\/strong\u003e gold alloys when combined with pure gold\u003c\/li\u003e\n\u003cli\u003eCompatible with gold alloy targets from \u003cstrong\u003e9K to 14K\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContains no gold\u003c\/strong\u003e — sold as a master alloy for blending with fine gold\u003c\/li\u003e\n\u003cli\u003eMay contain proprietary metals, silicon, and deoxidizers for optimized casting performance\u003c\/li\u003e\n\u003cli\u003eSold by the troy ounce (20 DWT \/ 31.1 grams)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd\u003eDark Yellow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eInvestment casting master alloy; stone-in-place casting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGold Content\u003c\/th\u003e\n\u003ctd\u003eNone — alloy base only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Karat Range\u003c\/th\u003e\n\u003ctd\u003e9K–14K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition (listed)\u003c\/th\u003e\n\u003ctd\u003eCopper (Cu) 73.7%, Silver (Ag) 14.8%, Zinc (Zn) 11.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAdditional Components\u003c\/th\u003e\n\u003ctd\u003eMay contain proprietary metals, silicon, and deoxidizers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold By\u003c\/th\u003e\n\u003ctd\u003eTroy ounce (20 DWT \/ 31.1 grams)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eComposition percentages reflect listed ingredients only. Proprietary metals and processing additives such as silicon and deoxidizers may also be present in the formulation but are not disclosed in the composition breakdown. Always verify final alloy karat and properties through testing before use in finished work.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43581634183382,"sku":"846-128","price":26.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/dark-yellow-9-14-investment-casting-master-alloy-for-stone-in-place-casting-per-troy-ounce-20-dwt-otto-frei.jpg?v=1719957479"},{"product_id":"yellow-casting-master-alloy-10-14k","title":"Standard Yellow 9-14 Investment Casting Master Alloy-Per Troy Ounce (20DWT)","description":"\u003cp\u003eA reliable, professional-grade investment casting master alloy formulated to produce a darker yellow tone ideal for 10K–14K gold alloying. This alloy contains no gold and is sold per troy ounce (20 pennyweights \/ 31.1 grams), making it a cost-effective base for custom casting work. With a higher copper content and reduced silver compared to similar casting alloys, it delivers a warmer, deeper yellow color well-suited to yellow gold casting applications.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigher copper, lower silver ratio produces a distinctively darker yellow tone\u003c\/li\u003e\n\u003cli\u003eFormulated specifically for investment casting applications\u003c\/li\u003e\n\u003cli\u003eCompatible with 10K–14K yellow gold alloying\u003c\/li\u003e\n\u003cli\u003eContains no gold — sold as a master alloy base\u003c\/li\u003e\n\u003cli\u003eSold per troy ounce (20 DWT \/ 31.1 grams)\u003c\/li\u003e\n\u003cli\u003eProprietary formulation may also include silicon and de-oxidizing elements\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eInvestment casting master alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGold Content\u003c\/th\u003e\n\u003ctd\u003eNone — master alloy base only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCopper (Cu)\u003c\/th\u003e\n\u003ctd\u003e73.7%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSilver (Ag)\u003c\/th\u003e\n\u003ctd\u003e14.8%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eZinc (Zn)\u003c\/th\u003e\n\u003ctd\u003e11.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAdditional Elements\u003c\/th\u003e\n\u003ctd\u003eProprietary; may include silicon and de-oxidizing agents\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold By\u003c\/th\u003e\n\u003ctd\u003eTroy ounce (20 pennyweights \/ 31.1 grams)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKarat Range\u003c\/th\u003e\n\u003ctd\u003e10K–14K yellow gold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cp\u003eThe full composition includes proprietary metals not disclosed in the listed percentages. The alloy may also contain additional elements such as silicon and de-oxidizing agents. Composition figures reflect primary constituents only.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43581634511062,"sku":"846-132","price":26.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/standard-yellow-9-14-investment-casting-master-alloy-per-troy-ounce-20dwt-otto-frei.jpg?v=1719957479"},{"product_id":"light-yellow-9-14k-investment-casting-master-alloy-per-troy-ounce","title":"Light Yellow 9-14 Investment Casting Master Alloy-Per Troy Ounce (20DWT)","description":"\u003cp\u003eA popular all-around investment casting master alloy formulated for producing 9–14k gold. This alloy contains more silver than comparable formulations, resulting in a lighter, greener yellow tone. When used for 14k gold, it yields a medium light yellow color. Sold by the troy ounce (20 pennyweights or 31.1 grams).\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eVersatile master alloy suitable for 9–14k investment casting applications\u003c\/li\u003e\n\u003cli\u003eHigher silver content delivers a lighter, greener yellow compared to lower-silver alternatives\u003c\/li\u003e\n\u003cli\u003eProduces a medium light yellow color when alloyed to 14k\u003c\/li\u003e\n\u003cli\u003eSold by the troy ounce (20 DWT \/ 31.1 grams)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition – Copper (Cu)\u003c\/th\u003e\n\u003ctd\u003e68.7%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition – Silver (Ag)\u003c\/th\u003e\n\u003ctd\u003e17.3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition – Zinc (Zn)\u003c\/th\u003e\n\u003ctd\u003e14%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSuitable Karat Range\u003c\/th\u003e\n\u003ctd\u003e9–14k\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eColor Result (14k)\u003c\/th\u003e\n\u003ctd\u003eMedium light yellow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold By\u003c\/th\u003e\n\u003ctd\u003eTroy ounce (20 DWT \/ 31.1 grams)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eThis alloy contains proprietary metals not listed in the composition section. The formulation may also include additional elements such as silicon and deoxidizers.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43581634969814,"sku":"846-134","price":30.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/light-yellow-9-14-investment-casting-master-alloy-per-troy-ounce-20dwt-otto-frei.jpg?v=1719957479"},{"product_id":"ultra-white-9-18-investment-casting-master-alloy","title":"Ultra White 9-18 Investment Casting Master Alloy","description":"\u003cp\u003eThe Ultra White 9–18 Investment Casting Master Alloy is a nickel-based white gold master alloy formulated for investment casting and fabrication applications across 10K, 14K, and 18K gold. Sold by the troy ounce (20 pennyweights \/ 31.1 grams), this alloy contains no gold and is designed to be pre-alloyed with fine gold before casting. Note that proprietary metals are present in the formulation in addition to the listed composition, and the alloy may also contain silicon and deoxidizers.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible with 10K, 14K, and 18K white gold casting applications\u003c\/li\u003e\n\u003cli\u003eSuitable for both investment casting and fabrication\u003c\/li\u003e\n\u003cli\u003eContains no gold — pre-alloy with fine gold prior to casting\u003c\/li\u003e\n\u003cli\u003eMay also contain silicon and deoxidizers in addition to listed composition\u003c\/li\u003e\n\u003cli\u003eSold by the troy ounce (20 pennyweights \/ 31.1 grams)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition (listed)\u003c\/th\u003e\n\u003ctd\u003eCu 57%, Zn 21%, Ni 22%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGold Content\u003c\/th\u003e\n\u003ctd\u003eContains no gold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAdditional Ingredients\u003c\/th\u003e\n\u003ctd\u003eProprietary metals; may also contain silicon and deoxidizers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold By\u003c\/th\u003e\n\u003ctd\u003eTroy ounce (20 pennyweights \/ 31.1 grams)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003ePre-Alloying:\u003c\/strong\u003e Pre-alloying all alloy and fine gold with aggressive stirring and fluxing is recommended to ensure a uniform mixture.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStep 1 — Pre-Alloying Temperatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e10K: 1060°C – 1080°C \/ 1940°F – 1976°F\u003c\/li\u003e\n\u003cli\u003e14K–18K: 1050°C – 1060°C \/ 1922°F – 1940°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eStep 2 — Casting Temperatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e10K Alloyed Grain: 1055°C – 1075°C \/ 1931°F – 1967°F\u003c\/li\u003e\n\u003cli\u003e14K Alloyed Grain: 1015°C – 1035°C \/ 1859°F – 1895°F\u003c\/li\u003e\n\u003cli\u003e18K Alloyed Grain: 990°C – 1010°C \/ 1814°F – 1850°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMelt temperature may vary with type of unit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFlask Temperature:\u003c\/strong\u003e Normal recommended range is 540°C – 675°C \/ 1004°F – 1247°F, depending on flask size, karat, and jewelry type.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFluxing:\u003c\/strong\u003e Fluxing white gold is extremely important for collecting oxides. Boric acid is the recommended flux. Do not use carbon fluxes or refining fluxes such as soda ash or saltpeter. Avoid flux in bottom-pour automatic casting units.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuench Time:\u003c\/strong\u003e 10–12 minutes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInvestment Removal:\u003c\/strong\u003e Most standard investment removers will successfully remove investment powder. Use of aggressive acids is not recommended, as it causes stress corrosion and surface damage.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eScrap Mix:\u003c\/strong\u003e A 70% fresh–30% scrap mix is recommended. White gold alloy has approximately one-third the reusability of yellow gold alloys.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43581635199190,"sku":"846-140","price":9.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/ultra-white-9-18-investment-casting-master-alloy-otto-frei.jpg?v=1719957478"},{"product_id":"ultra-white-nickel-master-alloy-14k-18k-white-gold-fabrication-per-troy-ounce","title":"Ultra White 14-18 Fabrication Master Alloy Per Troy Ounce","description":"\u003cp\u003eUltra White is a nickel-based fabrication master alloy designed for making 14K and 18K white gold alloys. It offers high tensile strength and contains no silver or gold. Sold by the troy ounce (20 pennyweights \/ 31.1 grams), this alloy is also suitable for casting applications. Note: proprietary metals are present in the formulation that are not reflected in the published composition; the alloy may also contain silicon and deoxidizers.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNickel-based master alloy for 14K–18K white gold fabrication\u003c\/li\u003e\n\u003cli\u003eHigh tensile strength\u003c\/li\u003e\n\u003cli\u003eContains no silver and no gold\u003c\/li\u003e\n\u003cli\u003eSuitable for both fabrication and casting\u003c\/li\u003e\n\u003cli\u003eSold by the troy ounce (20 DWT \/ 31.1 g)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eAlloy Base\u003c\/th\u003e\n\u003ctd\u003eNickel-based\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition (Cu)\u003c\/th\u003e\n\u003ctd\u003e59.9%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition (Zn)\u003c\/th\u003e\n\u003ctd\u003e20%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition (Ni)\u003c\/th\u003e\n\u003ctd\u003e20%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAdditional Constituents\u003c\/th\u003e\n\u003ctd\u003eProprietary metals; may also contain silicon and deoxidizers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Karat Range\u003c\/th\u003e\n\u003ctd\u003e14K–18K white gold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInitial Melting Temperature\u003c\/th\u003e\n\u003ctd\u003e1070°C \/ 1958°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePouring Temp – 14K Ingots\u003c\/th\u003e\n\u003ctd\u003e1010°C \/ 1850°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePouring Temp – 18K Ingots\u003c\/th\u003e\n\u003ctd\u003e1015°C \/ 1860°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAnnealing Temperature\u003c\/th\u003e\n\u003ctd\u003e732°C \/ 1350°F for 20 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold By\u003c\/th\u003e\n\u003ctd\u003eTroy ounce (20 DWT \/ 31.1 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eMelting:\u003c\/strong\u003e Melt the alloy and fine gold together in a clean crucible — place the alloy on the bottom and fine gold on top. Use boric acid flux to keep metal clean. Stir thoroughly before pouring. A neutral or reducing cover gas is strongly recommended for white gold alloys.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePouring:\u003c\/strong\u003e Pour into a preheated vertical graphite mold or a lightly lubricated iron mold using a steady, even motion. Slow the pour at the end to minimize shrinkage at the top of the ingot. Use a round rod mold for wire; use an L-shaped 2-piece mold for plate and sheet.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo Not Quench:\u003c\/strong\u003e Remove the ingot from the mold and allow it to air cool. Nickel white gold alloys will be significantly softer if allowed to air cool after pouring and after each anneal. Soak in hot pickle solution to remove surface oxides.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFabrication:\u003c\/strong\u003e Clean the ingot of all oxide and flux before rolling. Reduce the ingot by 50% before each anneal — too small a reduction can cause cracking during anneal. Clean in hot pickle after each anneal. Keep rolls, dies, and metal clean to prevent surface defects.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAnnealing:\u003c\/strong\u003e Anneal at 732°C \/ 1350°F for 20 minutes. Do not quench — allow to air cool. Apply a boric acid fire coat before annealing in an open-atmosphere oven to limit oxidation. Avoid over-annealing, which can cause excessive grain growth, orange-peel surface texture, or reduced strength.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRemelting:\u003c\/strong\u003e Use a 30% scrap to 70% fresh mix. Nickel white gold alloys have approximately one-third the reusability of yellow gold alloys.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAdditional Guidelines:\u003c\/strong\u003e Use very little boric acid flux. Do not use carbon-based flux (e.g., soda ash, saltpeter). No flux is required in a bottom-pour automatic casting unit. Avoid aggressive acids, which can cause corrosion and surface damage. To calculate required metal weight in grams, multiply density (g\/cc) by wax weight (g) and add 10% for the button. Gypsum-bonded investment is recommended — follow the manufacturer's burnout cycle instructions.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43581635395798,"sku":"846-141","price":10.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/ultra-white-14-18-fabrication-master-alloy-per-troy-ounce-otto-frei.jpg?v=1719957478"},{"product_id":"dark-pink-rose-9-18-master-alloy-troy-ounce","title":"Dark Pink-Rose 9-18 All Purpose Master Alloy-Sold By the Troy Ounce (20DWT)","description":"\u003cp\u003eThe Dark Pink-Rose 9–18 All Purpose Master Alloy is a professional-grade casting and fabrication alloy designed for jewelers working across a wide range of gold karatages from 9 to 18 karat. Sold by the troy ounce (20 pennyweight \/ 31.1 grams), this master alloy contains no gold and is formulated to deliver a warm, dark pink-rose color result when alloyed with gold. Its low silver content and high fluidity make it well suited for investment casting as well as bench fabrication work.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAll-purpose formulation suitable for both casting and fabrication applications\u003c\/li\u003e\n\u003cli\u003eCompatible with 9 to 18 karat gold alloy systems\u003c\/li\u003e\n\u003cli\u003eLow silver content promotes high fluidity for clean casting results\u003c\/li\u003e\n\u003cli\u003eContains no gold — used as a master alloy to be combined with fine gold\u003c\/li\u003e\n\u003cli\u003eDelivers a dark pink-rose color characteristic in finished alloys\u003c\/li\u003e\n\u003cli\u003eSold by the troy ounce (20 DWT \/ 31.1 grams)\u003c\/li\u003e\n\u003cli\u003eProprietary metals are included in the formulation beyond the listed composition\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eKarat Range\u003c\/th\u003e\n\u003ctd\u003e9–18 karat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eColor Result\u003c\/th\u003e\n\u003ctd\u003eDark Pink-Rose\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eCasting and fabrication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFluidity\u003c\/th\u003e\n\u003ctd\u003eHigh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSilver Content\u003c\/th\u003e\n\u003ctd\u003eLow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGold Content\u003c\/th\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition\u003c\/th\u003e\n\u003ctd\u003eCu 92.5%, Ag 4.5%, Zn 3% (plus proprietary metals)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold By\u003c\/th\u003e\n\u003ctd\u003eTroy ounce (20 DWT \/ 31.1 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eThe listed composition — copper 92.5%, silver 4.5%, zinc 3% — reflects the primary ingredients. The manufacturer includes additional proprietary metals in the formulation that are not disclosed in the composition breakdown. This alloy contains no gold and must be combined with fine gold to produce a finished karat alloy.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43581638377686,"sku":"846-150","price":17.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/dark-pink-rose-9-18-all-purpose-master-alloy-sold-by-the-troy-ounce-20dwt-otto-frei.jpg?v=1719957478"},{"product_id":"rich-yellow-stone-in-place-casting-master-alloy","title":"Rich Yellow 9-14 Investment Casting Stone-In-Place-Master Alloy-Per Troy Ounce (20DWT)","description":"\u003cp\u003eRich Yellow Stone-in-Place Investment Casting Master Alloy is formulated for jewelers who require a high-reusability, tarnish-resistant alloy suitable for casting directly with stones in place. Formerly known as \u003cstrong\u003ePeach Klondike Yellow\u003c\/strong\u003e, this master alloy features high silver content and is designed for producing rich yellow 9–14K casting alloys. It is sold by the troy ounce (20 pennyweights or 31.1 grams).\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFormulated for stone-in-place investment casting applications\u003c\/li\u003e\n\u003cli\u003eHigh reusability — suitable for repeated casting cycles\u003c\/li\u003e\n\u003cli\u003eTarnish-resistant composition for lasting finish quality\u003c\/li\u003e\n\u003cli\u003eHigh silver content for refined color and performance\u003c\/li\u003e\n\u003cli\u003eRich yellow color result appropriate for 9–14K alloy production\u003c\/li\u003e\n\u003cli\u003eFormerly marketed as \u003cstrong\u003ePeach Klondike Yellow\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eStone-in-place investment casting master alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTarget Karat Range\u003c\/th\u003e\n\u003ctd\u003e9–14K yellow gold alloys\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition – Copper (Cu)\u003c\/th\u003e\n\u003ctd\u003e68%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition – Silver (Ag)\u003c\/th\u003e\n\u003ctd\u003e23%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition – Zinc (Zn)\u003c\/th\u003e\n\u003ctd\u003e9%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold By\u003c\/th\u003e\n\u003ctd\u003eTroy ounce (20 pennyweights \/ 31.1 grams)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eThis alloy contains proprietary metals in its formulation that are not fully disclosed in the composition listing above. The product may also contain other elements, including silicon. Composition percentages reflect primary constituents only.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43581638705366,"sku":"846-158","price":39.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/rich-yellow-9-14-investment-casting-stone-in-place-master-alloy-per-troy-ounce-20dwt-otto-frei.jpg?v=1719957478"},{"product_id":"green-yellow-9-18-investment-casting-master-alloy-troy-ounce","title":"Green Yellow 9-18 Investment Casting Master Alloy Per Troy Ounce","description":"\u003cp\u003eThis master alloy produces a distinctive green-yellow shade of gold thanks to its very high silver content. Formulated for investment casting, it delivers excellent results in lost-wax and other casting processes while also performing well as a fabrication alloy. The alloy is highly reusable, tarnish resistant, and produces a very high luster finish. Sold by the troy ounce (20 pennyweight \/ 31.1 grams).\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProduces a green-yellow gold color with high silver content\u003c\/li\u003e\n\u003cli\u003eExcellent performance as an investment casting alloy\u003c\/li\u003e\n\u003cli\u003eAlso suitable for use as a fabrication alloy\u003c\/li\u003e\n\u003cli\u003eHighly reusable — reduces material waste over time\u003c\/li\u003e\n\u003cli\u003eTarnish resistant with a very high luster\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSold As\u003c\/th\u003e\n\u003ctd\u003ePer troy ounce (20 pennyweight \/ 31.1 grams)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAlloy Type\u003c\/th\u003e\n\u003ctd\u003eMaster Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePrimary Application\u003c\/th\u003e\n\u003ctd\u003eInvestment casting; fabrication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGold Color Produced\u003c\/th\u003e\n\u003ctd\u003eGreen-yellow gold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition – Copper (Cu)\u003c\/th\u003e\n\u003ctd\u003e14.9%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition – Silver (Ag)\u003c\/th\u003e\n\u003ctd\u003e84.1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition – Zinc (Zn)\u003c\/th\u003e\n\u003ctd\u003e1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cp\u003eThere are proprietary metals in the formulation that are not reflected in the published composition breakdown above.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43581638901974,"sku":"846-184","price":119.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/green-yellow-9-18-investment-casting-master-alloy-per-troy-ounce-otto-frei.jpg?v=1719957478"},{"product_id":"rich-yellow-18k-casting-master-alloy","title":"Rich Yellow 18-22 Investment Casting Master Alloy-Per Troy Ounce (20DWT)","description":"\u003cp\u003eRich Yellow 18–22 Investment Casting Master Alloy delivers a deep, rich yellow color in the classic European style. Featuring a smooth surface and high luster, this alloy is best suited for 18K casting applications and benefits from high silver content for refined results. This formula includes a de-oxidizer, distinguishing it from the standard 846-175ND formulation. \u003cstrong\u003eFormerly called Euro Yellow.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDeep, rich yellow color with European-style character\u003c\/li\u003e\n\u003cli\u003eSmooth surface finish with high luster\u003c\/li\u003e\n\u003cli\u003eOptimized for 18K investment casting\u003c\/li\u003e\n\u003cli\u003eHigh silver content in the alloy composition\u003c\/li\u003e\n\u003cli\u003eIncludes a de-oxidizer — distinguishes it from formula 846-175ND\u003c\/li\u003e\n\u003cli\u003eMay also contain silicon and other proprietary elements not listed in the composition\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eBest Use\u003c\/th\u003e\n\u003ctd\u003e18K Investment Casting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd\u003eDeep Rich Yellow, European Style\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCopper (Cu)\u003c\/th\u003e\n\u003ctd\u003e46%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSilver (Ag)\u003c\/th\u003e\n\u003ctd\u003e50%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eZinc (Zn)\u003c\/th\u003e\n\u003ctd\u003e4%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDe-oxidizer Included\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold By\u003c\/th\u003e\n\u003ctd\u003eTroy ounce (20 pennyweights \/ 31.1 grams)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eProprietary metals are present in this formulation that are not reflected in the listed composition percentages.\u003c\/strong\u003e The alloy may also contain silicon and other elements. The composition section above represents primary constituents only.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43581639131350,"sku":"846-175","price":72.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/rich-yellow-18-22-investment-casting-master-alloy-per-troy-ounce-20dwt-otto-frei.jpg?v=1719957474"},{"product_id":"copper-casting-grain-999-pure-troy-ounce","title":"Copper Casting Grain","description":"\u003cp\u003eThis hard-to-find .999 pure copper casting grain is used for alloying with gold and silver. High-purity copper ensures consistent, repeatable results when preparing custom alloys for jewelry casting. Sold by the troy ounce (20 pennyweights \/ 31.1 grams).\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e.999 pure copper casting grain\u003c\/li\u003e\n\u003cli\u003eIdeal for alloying with gold and silver\u003c\/li\u003e\n\u003cli\u003eHigh purity supports consistent, repeatable alloying results\u003c\/li\u003e\n\u003cli\u003eSold by the troy ounce (20 dwt \/ 31.1 g)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCreating custom karat gold alloys\u003c\/li\u003e\n\u003cli\u003eAdjusting silver alloys\u003c\/li\u003e\n\u003cli\u003eGeneral jewelry casting work\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePurity\u003c\/th\u003e\n\u003ctd\u003e.999 pure copper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eForm\u003c\/th\u003e\n\u003ctd\u003eCasting grain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold By\u003c\/th\u003e\n\u003ctd\u003eTroy ounce (20 dwt \/ 31.1 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43581639590102,"sku":"846-90","price":4.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/copper-casting-grain-otto-frei.jpg?v=1719957474"},{"product_id":"brass-casting-grain-troy-ounce","title":"Brass Casting Grain-Sold by the Troy Ounce","description":"\u003cp\u003eAn ideal choice for sample lines and production casting, this brass casting grain is a clean two-component alloy of copper and zinc — nothing else. Sourced from an East Coast manufacturer of precious metal products, this grain is produced with a strong commitment to purity and compliance with regulations governing lead, mercury, and nickel content. Sold by the troy ounce (20 pennyweights or 31.1 grams).\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePure copper and zinc alloy — no additional metals or additives\u003c\/li\u003e\n\u003cli\u003eSourced from an East Coast precious metal manufacturer committed to alloy purity\u003c\/li\u003e\n\u003cli\u003eFormulated to comply with regulations on lead, mercury, and nickel content\u003c\/li\u003e\n\u003cli\u003eWell-suited for sample lines and jewelry casting applications\u003c\/li\u003e\n\u003cli\u003eSold by the troy ounce for precise, flexible purchasing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition\u003c\/th\u003e\n\u003ctd\u003eCopper and zinc alloy (brass)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eForm\u003c\/th\u003e\n\u003ctd\u003eCasting grain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMelting Temperature\u003c\/th\u003e\n\u003ctd\u003e1922°F (1005°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold By\u003c\/th\u003e\n\u003ctd\u003eTroy ounce (20 pennyweights \/ 31.1 grams)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompliance\u003c\/th\u003e\n\u003ctd\u003eLead-free, mercury-free, nickel-compliant formulation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43581640081622,"sku":"846-91","price":5.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/brass-casting-grain-sold-by-the-troy-ounce-otto-frei.jpg?v=1719957474"},{"product_id":"rich-yellow-18-22k-master-alloy-fabricating-casting","title":"Rich Yellow 18-22 Investment Casting \u0026 Fabricating Master Alloy-Suitable for Granulation-Per Troy Ounce (20DWT)","description":"\u003cp\u003eThis rich, deep yellow master alloy is specially formulated for jewelers working in 18K–22K gold fabrication and investment casting. Designed with granulation techniques in mind, it contains no de-oxidizer, making it particularly well-suited for traditional granulation work. The alloy produces a smooth surface with high luster and performs exceptionally in sheet, wire, and tube making. While optimized for fabrication, it is also suitable for investment casting. Sold per troy ounce (20 pennyweights \/ 31.1 grams). \u003cem\u003eContains no gold.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSpecially formulated for granulation — contains no de-oxidizer\u003c\/li\u003e\n\u003cli\u003eDeep, rich yellow color with smooth surface and high luster\u003c\/li\u003e\n\u003cli\u003eExcellent for sheet, wire, and tube fabrication\u003c\/li\u003e\n\u003cli\u003eSuitable for investment casting as well as fabrication\u003c\/li\u003e\n\u003cli\u003eBest performance as an 18K alloy\u003c\/li\u003e\n\u003cli\u003eContains no gold\u003c\/li\u003e\n\u003cli\u003eNote: Proprietary metals are present in the formulation and are not fully disclosed in the composition listing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Karat Range\u003c\/th\u003e\n\u003ctd\u003e18K–22K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePrimary Application\u003c\/th\u003e\n\u003ctd\u003eFabrication (sheet, wire, tube); investment casting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGranulation Suitable\u003c\/th\u003e\n\u003ctd\u003eYes — no de-oxidizer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eContains Gold\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCopper (Cu)\u003c\/th\u003e\n\u003ctd\u003e46.25%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSilver (Ag)\u003c\/th\u003e\n\u003ctd\u003e50%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eZinc (Zn)\u003c\/th\u003e\n\u003ctd\u003e3.75%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold By\u003c\/th\u003e\n\u003ctd\u003eTroy ounce (20 DWT \/ 31.1 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eThis alloy contains proprietary metals in addition to the listed composition. The disclosed percentages (Cu 46.25%, Ag 50%, Zn 3.75%) do not represent the complete formulation. Sold by the troy ounce, equal to 20 pennyweights or 31.1 grams.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43581640245462,"sku":"846-175ND","price":91.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/rich-yellow-18-22-investment-casting-and-fabricating-master-alloy-suitable-for-granulation-per-troy-ounce-20dwt-otto-frei.jpg?v=1719957474"},{"product_id":"manganese-bronze-casting-alloy","title":"Manganese Bronze Casting Alloy by the Pound","description":"\u003cp\u003eJewelers Manganese Bronze is a casting alloy developed to provide jewelry casters with a base metal suitable for both centrifugal and vacuum casting applications. When properly finished, this alloy produces a bright lemon yellow color, making it an attractive option for base metal jewelry production. It is a proprietary formulation composed of approximately 60% copper (Cu) and approximately 35% zinc (Zn), with small amounts of additional metals.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSuitable for both centrifugal and vacuum casting methods\u003c\/li\u003e\n\u003cli\u003eProduces a bright lemon yellow color when properly finished\u003c\/li\u003e\n\u003cli\u003eProprietary alloy formulation designed specifically for jewelry casting\u003c\/li\u003e\n\u003cli\u003ePouring range of 1700°F–2100°F\u003c\/li\u003e\n\u003cli\u003eBase metal alternative for jewelry casters\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition\u003c\/th\u003e\n\u003ctd\u003eApproximately 60% copper (Cu), approximately 35% zinc (Zn), plus small amounts of other metals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAlloy Type\u003c\/th\u003e\n\u003ctd\u003eManganese Bronze (proprietary)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePouring Range\u003c\/th\u003e\n\u003ctd\u003e1700°F–2100°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish Color\u003c\/th\u003e\n\u003ctd\u003eBright lemon yellow (when properly finished)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Casting Methods\u003c\/th\u003e\n\u003ctd\u003eCentrifugal, vacuum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold By\u003c\/th\u003e\n\u003ctd\u003ePound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43581652336854,"sku":"143.301","price":28.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/manganese-bronze-casting-alloy-by-the-pound-otto-frei.jpg?v=1719957470"},{"product_id":"re-cast-it-gold-casting-additive-2oz","title":"2 Ounce Pack-Re-Cast-It Gold Alloy Refresher-Replenisher","description":"\u003cp\u003e\u003cstrong\u003eRe-Cast-It\u003c\/strong\u003e is an alloy additive designed for recasting old or scrap yellow gold. It does not contain gold and is not a substitute for gold, but when mixed with scrap yellow gold and some fresh fine gold, it helps restore castings to a bright, clean finish. Each pack contains \u003cstrong\u003e2 troy ounces (40 DWT)\u003c\/strong\u003e of Re-Cast-It alloy refresher and replenisher.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCleans old gold castings, restoring a bright yellow \"new gold\" appearance\u003c\/li\u003e\n\u003cli\u003eHelps eliminate porosity in castings\u003c\/li\u003e\n\u003cli\u003eImproves metal fluidity during casting\u003c\/li\u003e\n\u003cli\u003eReduces reddish surface discoloration common in recast gold\u003c\/li\u003e\n\u003cli\u003eDe-oxidizes used gold during the casting process\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePack Quantity\u003c\/th\u003e\n\u003ctd\u003e2 troy ounces (40 DWT)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGold Content\u003c\/th\u003e\n\u003ctd\u003eContains no gold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIntended Use\u003c\/th\u003e\n\u003ctd\u003eAlloy additive for recasting scrap yellow gold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eMixing Ratios\u003c\/h3\u003e\n\u003cp\u003eThe following ratios apply per 100 DWT of scrap gold:\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eScrap Karat\u003c\/th\u003e\n\u003cth\u003eRe-Cast-It\u003c\/th\u003e\n\u003cth\u003eFine Gold to Add\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10K\u003c\/td\u003e\n\u003ctd\u003e5 DWT\u003c\/td\u003e\n\u003ctd\u003e3.57 DWT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e14K\u003c\/td\u003e\n\u003ctd\u003e2 DWT\u003c\/td\u003e\n\u003ctd\u003e2.82 DWT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e18K\u003c\/td\u003e\n\u003ctd\u003e1 DWT\u003c\/td\u003e\n\u003ctd\u003e3.00 DWT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eFor \u003cstrong\u003ewhite gold\u003c\/strong\u003e, these ratios may be used, but effectiveness is limited to 1–2 cycles due to yellowing. When continuously reusing scrap combined with fresh metal, use half the above amounts to avoid excessive deoxidizer buildup.\u003c\/p\u003e\n\n\u003ch3\u003eMelting Instructions\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003ePlace Re-Cast-It at the bottom of the crucible, then place scrap on top.\u003c\/li\u003e\n\u003cli\u003eOnce molten, stir with a \u003cstrong\u003ecarbon rod\u003c\/strong\u003e for gas-fired or torch melts, or a \u003cstrong\u003equartz rod\u003c\/strong\u003e for electric induction melts.\u003c\/li\u003e\n\u003cli\u003eFluxing with boric acid may be required depending on the condition of the scrap.\u003c\/li\u003e\n\u003cli\u003eBest results are achieved when scrap is free of oxides and investment powder residue.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cp\u003e\u003cem\u003eIf gold is contaminated with cuprous oxide (red oxide), only limited positive results can be expected. Re-Cast-It is not a substitute for gold and will not alter the karat of the alloy on its own.\u003c\/em\u003e\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43581682254038,"sku":"122.607","price":26.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/2-ounce-pack-re-cast-it-gold-alloy-refresher-replenisher-otto-frei.jpg?v=1719957457"},{"product_id":"silver-sheet-solder-eutectic-zinc-free-enameling","title":"Silver Sheet Solder Eutectic Zinc-Free for Enameling","description":"\u003cp\u003eZinc-free eutectic silver solder is the piece you reach for when a joint has to survive an enameling firing without spoiling the enamel. Commonly known as \u003cstrong\u003eIT solder\u003c\/strong\u003e, it is formulated specifically for enameling applications. Each piece weighs approximately 5 pennyweights (5 DWT, or 1\/4 troy ounce) and contains \u003cstrong\u003e80% silver and 20% copper\u003c\/strong\u003e, with no zinc in the alloy.\u003c\/p\u003e\u003cp\u003eZinc can cause bubbling and surface defects when solder comes into contact with enamel during firing, which is why eutectic silver solders are the professional standard for enameled metalwork. The eutectic composition, silver and copper only, removes that risk and makes this solder the reliable choice wherever enamel and solder may interact. The approximate flow point is \u003cstrong\u003e1560°F (848°C)\u003c\/strong\u003e.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eZinc-free eutectic alloy, safe for use in enameling applications\u003c\/li\u003e\n\u003cli\u003eContains 80% silver and 20% copper only\u003c\/li\u003e\n\u003cli\u003ePrevents bubbling when solder contacts enamel during firing\u003c\/li\u003e\n\u003cli\u003eAlso known as IT solder in the trade\u003c\/li\u003e\n\u003cli\u003eApproximate flow point of 1560°F (848°C)\u003c\/li\u003e\n\u003cli\u003eSold as a single piece weighing approximately 5 DWT (1\/4 troy ounce)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eEach piece measures approximately 3-1\/2 inches long by 1-1\/4 inches wide. Piece dimensions will vary.\u003c\/li\u003e\u003c\/ul\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43581741334742,"sku":"804-409","price":42.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/silver-sheet-solder-eutectic-zinc-free-for-enameling-otto-frei.jpg?v=1719957418"},{"product_id":"dark-pink-rose-9-18k-fabrication-rolling-master-alloy-no-de-ox","title":"Dark Pink Rose 9-18K Fabrication Rolling Master Alloy-Per Troy Ounce (20DWT)","description":"\u003cp\u003eCopper gives rose and pink gold alloys their characteristic warm hue, but it also reduces workability — making setting and fabrication more challenging. This \u003cstrong\u003eDark Pink Rose Fabrication Rolling Master Alloy\u003c\/strong\u003e is specifically formulated without De-Ox, the additive used in casting alloys to protect the melt during the casting process. While De-Ox serves an important function in casting, it also introduces brittleness that makes the resulting alloy harder to work by hand or with rolling equipment. By omitting De-Ox entirely, this alloy delivers superior malleability and ductility for bench fabrication.\u003c\/p\u003e\u003cp\u003eSuitable for alloying with 9K through 18K gold, this master alloy is designed for metalsmiths and jewelers who roll, draw, forge, or fabricate pink and rose gold components. \u003cstrong\u003eThis alloy offers the best workability of all pink alloys in the Otto Frei lineup\u003c\/strong\u003e, making it the preferred choice for fabrication work where ease of forming and finishing matters.\u003c\/p\u003e\u003cp\u003eNote that this alloy is distinct from casting alloy 846-150. The only difference between the two is the absence of De-Ox in this formulation. If you are casting, use the casting-specific alloy. If you are fabricating, this is the correct choice.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFormulated without De-Ox for superior workability in fabrication and rolling applications\u003c\/li\u003e\n\u003cli\u003eBest workability of all pink master alloys offered — ideal for rolling, drawing, and forging\u003c\/li\u003e\n\u003cli\u003eCompatible with 9K–18K gold alloy systems\u003c\/li\u003e\n\u003cli\u003eProduces warm pink and rose gold color tones through high copper content\u003c\/li\u003e\n\u003cli\u003eDistinct from casting alloy 846-150 — optimized specifically for fabrication\u003c\/li\u003e\n\u003cli\u003eSold by the troy ounce (20 pennyweights \/ 31.1 grams)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eColor Result\u003c\/th\u003e\n\u003ctd\u003eDark Pink \/ Rose\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKarat Range\u003c\/th\u003e\n\u003ctd\u003e9K–18K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eFabrication and rolling; not intended for casting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDe-Ox\u003c\/th\u003e\n\u003ctd\u003eNone — De-Ox free formulation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition: Copper (Cu)\u003c\/th\u003e\n\u003ctd\u003e94%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition: Silver (Ag)\u003c\/th\u003e\n\u003ctd\u003e4.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition: Zinc (Zn)\u003c\/th\u003e\n\u003ctd\u003e1.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold By\u003c\/th\u003e\n\u003ctd\u003eTroy ounce (20 pennyweights \/ 31.1 grams)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eThere are proprietary metals in the formulation that are not disclosed in the composition listing above. For casting applications, use casting alloy 846-150 instead of this product.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43582909448406,"sku":"846-151ND","price":19.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/dark-pink-rose-9-18k-fabrication-rolling-master-alloy-per-troy-ounce-20dwt-otto-frei.jpg?v=1719956810"},{"product_id":"easy-clipped-silver-solder-half-oz-packs","title":"Easy Clipped Silver Solder-1\/2 Oz. Packs","description":"\u003cp\u003ePre-clipped easy flow silver solder lets you place a piece and go straight to the joint, without stopping to cut solder strip at the bench. Each piece is clipped to a precise 0.040\" × 0.040\" (1 mm × 1 mm) square, and packs weigh approximately 1\/2 Troy Ounce (10 DWT).\u003c\/p\u003e\u003cp\u003eEasy flow silver solder is ideal for joining silver components that require a lower flow temperature, making it the right choice for assemblies where higher-temperature solders might damage previously soldered joints or heat-sensitive elements.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePre-clipped into uniform 0.040\" × 0.040\" (1 mm × 1 mm) square pieces, so no cutting is required\u003c\/li\u003e\n\u003cli\u003eEasy flow formula with a flow temperature of approximately 1325°F\u003c\/li\u003e\n\u003cli\u003e65% silver content\u003c\/li\u003e\n\u003cli\u003eSold in packs of approximately 1\/2 Troy Ounce (10 DWT)\u003c\/li\u003e\n\u003cli\u003eConsistent piece size supports accurate solder placement and reduces waste\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43583680708822,"sku":"804-565","price":56.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/easy-clipped-silver-solder-12-oz-packs-otto-frei.jpg?v=1719956550"},{"product_id":"yellow-14k-18k-enameling-master-alloy-no-zinc","title":"Standard Yellow 14-18 Fabrication \u0026 Enameling Master Alloy-No Zinc","description":"\u003cp\u003eThis standard yellow master alloy is formulated for 14K and 18K gold fabrication and for glass enameling applications. Because it contains \u003cstrong\u003eno zinc\u003c\/strong\u003e, it is safe for use in glass enameling processes where zinc would cause problems. It can also be used for 14K and 18K casting when desired. It contains no gold.\u003c\/p\u003e\u003cp\u003eWith a high silver content and a clean, zinc-free formulation, this alloy delivers consistent color and workability for fabrication work. Formerly known as \u003cem\u003eRich Yellow All Enameling Alloy 80E No Zinc\u003c\/em\u003e.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eZinc-free formula — safe for glass enameling\u003c\/li\u003e\n\u003cli\u003eSuitable for 14K and 18K fabrication and casting\u003c\/li\u003e\n\u003cli\u003eHigh silver content for consistent yellow color\u003c\/li\u003e\n\u003cli\u003eContains no gold\u003c\/li\u003e\n\u003cli\u003eSold by the troy ounce (20 pennyweights or 31.1 grams)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition\u003c\/th\u003e\n\u003ctd\u003eCu 40%, Ag 60%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eZinc Content\u003c\/th\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGold Content\u003c\/th\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Use\u003c\/th\u003e\n\u003ctd\u003e14K–18K fabrication and glass enameling; also suitable for 14K–18K casting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold By\u003c\/th\u003e\n\u003ctd\u003eTroy ounce (20 pennyweights \/ 31.1 grams)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eThere are proprietary metals in the formulation which are not fully disclosed in the composition listing. The alloy may also contain other elements, including silicon. Formerly called \u003cem\u003eRich Yellow All Enameling Alloy 80E No Zinc\u003c\/em\u003e.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43583688999126,"sku":"846-180","price":86.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/rich-yellow-all-enameling-alloy-80e-no-zinc-otto-frei.jpg?v=1719956544"},{"product_id":"14k-yellow-easy-gold-wire-solder-9in-20-gauge","title":"14K Yellow Easy Gold Wire Solder 9\"- 20 Gauge","description":"\u003cp\u003eJoin 14K yellow gold assemblies at the bench with a wire solder that can be snipped into pallions and placed exactly where the joint needs it. This 14K yellow easy gold wire solder is supplied in 20 gauge wire cut to a 9 inch length, with approximately 1 DWT per package.\u003c\/p\u003e\u003cp\u003eEasy solder flows at the lowest temperature within the solder grade range, which suits final assembly steps, repair work, and any job where a joint that has already been soldered must be protected from reflow.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e14K yellow gold easy grade wire solder\u003c\/li\u003e\n\u003cli\u003e20 gauge wire diameter for consistent, controlled application\u003c\/li\u003e\n\u003cli\u003e9 inch length provides ample material per package\u003c\/li\u003e\n\u003cli\u003eEasy flow grade, the lowest flow temperature in the 14K solder range\u003c\/li\u003e\n\u003cli\u003eSuited to final soldering steps and repair work where protecting existing joints is critical\u003c\/li\u003e\n\u003cli\u003eWire form allows precise placement and easy snipping into pallions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eWhat you get:\u003c\/p\u003e\u003cul\u003e\u003cli\u003eOne package containing approximately 1 DWT of 14K yellow easy gold wire solder (9 inch, 20 gauge)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43584102039766,"sku":"800-298-9","price":250.63,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/14k-yellow-easy-gold-wire-solder-9-20-gauge-otto-frei.jpg?v=1719956399"},{"product_id":"hard-clipped-silver-solder-half-oz-packs","title":"Hard Clipped Silver Solder - 1\/2 Oz Packs","description":"\u003cp\u003ePre-cut hard flow silver solder for bench soldering, supplied in convenient 1\/2 Troy Ounce (10 DWT) packs. Each piece is pre-cut to \u003cstrong\u003e.040\" × .040\" (1 mm × 1 mm)\u003c\/strong\u003e square, eliminating the time-consuming step of cutting solder yourself at the bench. Hard silver solder flows at approximately \u003cstrong\u003e1450°F\u003c\/strong\u003e, making it ideal for early-stage joins in multi-step soldering sequences where subsequent solder operations will use lower-flow grades.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePre-cut to .040\" × .040\" (1 mm × 1 mm) square pieces, so no bench cutting is required\u003c\/li\u003e\n\u003cli\u003eHard flow grade that flows at approximately 1450°F\u003c\/li\u003e\n\u003cli\u003e75% silver content\u003c\/li\u003e\n\u003cli\u003eSold in packs weighing approximately 1\/2 Troy Ounce (10 DWT)\u003c\/li\u003e\n\u003cli\u003eSaves time and reduces material waste compared to cutting strip solder\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43584541327574,"sku":"804-567","price":65.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/hard-clipped-silver-solder-12-oz-packs-otto-frei.jpg?v=1719956108"},{"product_id":"14ky-clipped-plumb-hard-flow-cadmium-free-gold-solder-1dwt","title":"Gold Clipped Plumb Hard Flow Cadmium Free Solders, 1 DWT Packs","description":"\u003cp\u003eHard flow solder chips for 14K yellow gold work, cut small enough to place on the joint one at a time. Each chip is a uniform 1 mm × 1 mm square, so the solder is easy to handle, position, and control during fabrication and repair.\u003c\/p\u003e\u003cp\u003eThese clipped plumb solders are the hard flow grade of the series, flowing at 1480°F, and are meant for use early in a multi-solder sequence where the higher flow temperature is required, before softer solders are applied in later steps. The formula is cadmium free, which is safer for the jeweler and the studio.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e14K yellow gold clipped plumb hard flow solder\u003c\/li\u003e\n\u003cli\u003eCadmium free formula, safer for jewelers and studio environments\u003c\/li\u003e\n\u003cli\u003eCut in uniform 1 mm × 1 mm squares for consistent chip sizing and precise placement\u003c\/li\u003e\n\u003cli\u003eHard flow designation suits first step use in multi-stage soldering sequences\u003c\/li\u003e\n\u003cli\u003eFlows at 1480°F\u003c\/li\u003e\n\u003cli\u003eSold in packages of approximately 1 DWT for convenient bench quantity purchasing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eUse the hard flow solder first when soldering a single piece in several operations, so earlier joins hold while the softer grades are applied.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43584541720790,"sku":"800-732","price":212.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/14ky-clipped-plumb-gold-hard-flow-cadmium-free-solders-1-dwt-packs-otto-frei.jpg?v=1719956108"},{"product_id":"14kw-easy-flow-cadmium-free-clipped-plumb-gold-solder-1dwt-801-731","title":"14KW Clipped Plumb Gold Easy Flow Cadmium Free Solder-1 DWT Pack","description":"\u003cp\u003ePrecision-cut for consistent flow and easy placement, this 14K white plumb gold easy flow solder is the go-to choice for jewelers working on 14K white gold assemblies where controlled, lower-temperature joining is essential. Supplied as 1 mm × 1 mm square clips, each piece delivers reliable, repeatable results at the bench. This cadmium-free formula meets modern safety and compliance standards without compromising performance.\u003c\/p\u003e\u003cp\u003eDesignated as the easy flow grade in the 14K white clipped plumb gold solder series (see 80C-731MAIN for the full series), this solder flows at \u003cstrong\u003e1390°F\u003c\/strong\u003e — making it well suited for later-stage joins, repairs, and assemblies where protecting previously soldered areas is a priority.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e14K white plumb gold easy flow solder\u003c\/li\u003e\n\u003cli\u003eCadmium-free formula for safer bench use\u003c\/li\u003e\n\u003cli\u003eUniform 1 mm × 1 mm square clips for precise placement and consistent flow\u003c\/li\u003e\n\u003cli\u003eEasy flow grade — flows at 1390°F, ideal for step-soldering and repair work\u003c\/li\u003e\n\u003cli\u003ePart of a full series of clipped plumb gold solders (see 80C-731MAIN)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003e801-731\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKarat \/ Metal\u003c\/th\u003e\n\u003ctd\u003e14K White Gold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSolder Grade\u003c\/th\u003e\n\u003ctd\u003eEasy Flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlow Temperature\u003c\/th\u003e\n\u003ctd\u003e1390°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClip Size\u003c\/th\u003e\n\u003ctd\u003e1 mm × 1 mm square\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePackage Quantity\u003c\/th\u003e\n\u003ctd\u003eApproximately 1 DWT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCadmium Free\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eSpeedwire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eThis solder is considered the easy (lowest) flow grade within the 14K white clipped plumb gold solder series. For other flow grades in this series, refer to \u003cstrong\u003e80C-731MAIN\u003c\/strong\u003e. Always follow appropriate flux and heating protocols for gold solder applications.\u003c\/p\u003e","brand":"Speedwire","offers":[{"title":"Default Title","offer_id":43584541851862,"sku":"801-731","price":209.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/14kw-clipped-plumb-gold-easy-flow-cadmium-free-solder-1-dwt-pack-otto-frei.jpg?v=1719956106"},{"product_id":"14kw-clipped-plumb-hard-flow-cadmium-free-gold-solder-1dwt-speedwire","title":"Gold Clipped Plumb Hard Flow Cadmium Free Solder, 1 DWT Pack","description":"\u003cp\u003eHard flow solder chips for 14K white gold work, sized to be picked up and set on the joint one at a time. This clipped plumb solder from Speedwire is cut into precise 1 mm × 1 mm squares, so a jeweler can meter the solder at the seam, cut waste, and keep fabrication and repair joins consistent.\u003c\/p\u003e\u003cp\u003eIt is the hard flow grade of the clipped plumb 14K white gold solder series, flowing at 1570°F, and is intended for use early in a multi-step soldering sequence where the higher flow temperature is required. The cadmium-free formulation meets modern safety and compliance standards for professional studio and production environments.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCadmium-free formulation, safe for professional studio use\u003c\/li\u003e\n\u003cli\u003eHard flow grade, for the first solder join in a multi-step sequence\u003c\/li\u003e\n\u003cli\u003ePre-clipped 1 mm × 1 mm squares for precise placement and minimal waste\u003c\/li\u003e\n\u003cli\u003ePlumb gold, matched to 14K white gold alloy standards\u003c\/li\u003e\n\u003cli\u003eConsistent 1570°F flow temperature for repeatable results\u003c\/li\u003e\n\u003cli\u003eSold in packs of approximately 1 DWT\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eUse the hard flow grade first when soldering a piece in several steps, so that earlier joins do not reflow when the softer solders are applied.\u003c\/p\u003e","brand":"Speedwire","offers":[{"title":"Default Title","offer_id":43584541950166,"sku":"801-732","price":208.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/14kw-clipped-plumb-gold-hard-flow-cadmium-free-solder-1-dwt-pack-otto-frei.jpg?v=1719956106"},{"product_id":"18k-yellow-gold-plumb-solder-kit-easy-medium-hard-flow","title":"18K Gold Plumb Solder Kit","description":"\u003cp\u003eJoin 18K yellow gold at the bench with three matched torch solders in one kit: easy flow, medium flow, and hard flow.\u003c\/p\u003e\n\u003cp\u003eThese are true \u003cstrong\u003eplumb gold solders\u003c\/strong\u003e, meaning they match the karat of the metal they are intended for use with, which makes them the correct choice for constructing new jewelry pieces. Each piece weighs approximately one half pennyweight (1\/2 DWT), for a combined total of approximately 1-1\/2 DWT.\u003c\/p\u003e\n\u003cp\u003ePlumb gold solders differ from repair solders in an important way: repair solders contain a lower gold content than the work they are applied to and are designed to flow before plumb solders. Use plumb gold solders for new fabrication work, and reserve repair solders for repair applications.\u003c\/p\u003e\n\u003cp\u003eEasy, medium, and hard designations describe the relative flow temperatures of these solders to one another. Easy flow will flow first, followed by medium, then hard, allowing the jeweler to plan a sequence of solder joins on a single piece without reflowing earlier joints.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThree 18K yellow gold plumb solders included in one kit\u003c\/li\u003e\n\u003cli\u003ePlumb karat that matches the 18K gold content of the work piece\u003c\/li\u003e\n\u003cli\u003eSuitable for new jewelry fabrication and construction\u003c\/li\u003e\n\u003cli\u003eHard solders designed for use with a torch\u003c\/li\u003e\n\u003cli\u003eThree flow temperatures allow sequential soldering without reflowing earlier joints\u003c\/li\u003e\n\u003cli\u003eEach solder also available for individual purchase\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cp\u003eWhat you get:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e80C-551, 18K Yellow Easy Flow solder (1430°F), approx. 1\/2 DWT\u003c\/li\u003e\n\u003cli\u003e80C-552, 18K Yellow Medium Flow solder (1475°F), approx. 1\/2 DWT\u003c\/li\u003e\n\u003cli\u003e80C-553, 18K Yellow Hard Flow solder (1550°F), approx. 1\/2 DWT\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese are plumb gold solders intended for use in new jewelry construction. Do not use plumb gold solders as a substitute for repair solders, because repair solders have a lower gold content and a lower flow temperature appropriate for repair work. The individual solders included in this kit (80C-551, 80C-552, and 80C-553) are available for separate purchase.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43584677544150,"sku":"80C-555","price":368.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/18k-gold-plumb-solder-kit-otto-frei.jpg?v=1719956025"},{"product_id":"phos-copper-solder-paste-soft-half-oz-cadmium-free","title":"Copper Solder Paste - Soft - 1\/2 oz - Cadmium Free","description":"\u003cp\u003ePaste solder puts hard solder and its carrier exactly where the joint needs them. This copper paste solder, technically known as \u003cstrong\u003ephos-copper paste solder\u003c\/strong\u003e, is a cadmium-free and indium-free formula designed for hard (torch) soldering. It is sold in a syringe holding \u003cstrong\u003e10 DWT (1\/2 troy ounce)\u003c\/strong\u003e total weight, which suits jewelers, metalsmiths and fabricators working with copper, brass, bronze and mixed metal projects.\u003c\/p\u003e\u003cp\u003ePhos-copper paste solder flows at \u003cstrong\u003e1325°F\u003c\/strong\u003e, approximately the same temperature as a soft silver solder, so it stays accessible to a wide range of torch setups. The alloy finishes in a \u003cstrong\u003elight brassy color\u003c\/strong\u003e that blends naturally with brass and copper-toned metals, and it has a long history of use in producing brass military belt buckles and similar fabricated brass components.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCadmium-free and indium-free formula\u003c\/li\u003e\n\u003cli\u003eFlows at 1325°F, comparable to a soft silver solder\u003c\/li\u003e\n\u003cli\u003eProduces a light brassy color finish\u003c\/li\u003e\n\u003cli\u003eSyringe format for controlled application\u003c\/li\u003e\n\u003cli\u003eSold by total weight, 10 DWT (1\/2 troy oz)\u003c\/li\u003e\n\u003cli\u003eFor hard (torch) soldering only\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCopper, brass and bronze\u003c\/li\u003e\n\u003cli\u003eMixed metal work, including silver to brass joints\u003c\/li\u003e\n\u003cli\u003eStainless steel to brass or gold joints\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003e\u003cem\u003eThe date printed on the syringe is the manufacturing date. It is not a sell-by or expiration date.\u003c\/em\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCaution: contains fluorides.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43585121714390,"sku":"154.840","price":5.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/copper-solder-paste-soft-12-oz-cadmium-free-otto-frei.jpg?v=1719955798"},{"product_id":"medium-clipped-silver-solder-half-oz-packs","title":"Medium Clipped Silver Solder - 1\/2 Oz Packs","description":"\u003cp\u003ePre-cut solder chips take the measuring and snipping out of the job, so a joint gets the same amount of solder every time. These medium silver solder pieces are sold in packs weighing approximately 1\/2 troy ounce (10 DWT).\u003c\/p\u003e\n\u003cp\u003eEach piece is clipped to a precise \u003cstrong\u003e.040\" × .040\" (1 mm × 1 mm)\u003c\/strong\u003e square, so there is nothing to cut before you solder and waste stays low. The alloy is 70% silver and flows at approximately \u003cstrong\u003e1360°F\u003c\/strong\u003e, a mid-range flow temperature suited to work where an easy solder would be too low and hard solder is unnecessary.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePre-cut .040\" × .040\" (1 mm × 1 mm) square pieces, no cutting required\u003c\/li\u003e\n\u003cli\u003eMedium flow temperature of approximately 1360°F\u003c\/li\u003e\n\u003cli\u003e70% silver content\u003c\/li\u003e\n\u003cli\u003eSold in packs of approximately 1\/2 troy ounce (10 DWT)\u003c\/li\u003e\n\u003cli\u003eConsistent piece size reduces waste and speeds workflow\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43586860286166,"sku":"804-566","price":60.42,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/medium-clipped-silver-solder-12-oz-packs-otto-frei.jpg?v=1719955756"},{"product_id":"hi-karat-yellow-gold-repair-solder-sheets","title":"10K, 14K \u0026 18K Otto Frei High Karat Yellow Gold Repair Solders","description":"\u003cp\u003eHi-karat yellow gold repair solders give the bench a clean, color-matched joint on gold repair work, supplied in sheet form so you can cut paillons or strips to the size the job needs. Made in the USA, they carry a higher gold content than most standard repair solders, are 100% cadmium free, and flow at controlled temperatures for staged soldering.\u003c\/p\u003e\u003cp\u003eEach solder is formulated at a lower gold content than the karat of the workpiece, as recommended for repair soldering, and is sold as a sheet weighing approximately 1 pennyweight (DWT).\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e100% cadmium free formulation\u003c\/li\u003e\n\u003cli\u003eHigher gold content than most standard repair solders\u003c\/li\u003e\n\u003cli\u003eLower gold content than the karat of the workpiece, as recommended for repair soldering\u003c\/li\u003e\n\u003cli\u003eOffered in 10K, 14K, and 18K yellow in extra easy through hard flow temperatures for staged soldering\u003c\/li\u003e\n\u003cli\u003eSheet form for cutting custom paillons or strips\u003c\/li\u003e\n\u003cli\u003eSold in sheets weighing approximately 1 DWT (1.56 g \/ 0.055 oz t)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAvailable Options\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eKarat\u003c\/th\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003cth\u003eFlow Temperature\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e800-500\u003c\/td\u003e\n\u003ctd\u003e14K\u003c\/td\u003e\n\u003ctd\u003eYellow Extra Easy\u003c\/td\u003e\n\u003ctd\u003e1295°F (702°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e800-501\u003c\/td\u003e\n\u003ctd\u003e14K\u003c\/td\u003e\n\u003ctd\u003eYellow Easy\u003c\/td\u003e\n\u003ctd\u003e1325°F (718°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e800-502\u003c\/td\u003e\n\u003ctd\u003e14K\u003c\/td\u003e\n\u003ctd\u003eYellow Medium\u003c\/td\u003e\n\u003ctd\u003e1380°F (749°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e800-503\u003c\/td\u003e\n\u003ctd\u003e14K\u003c\/td\u003e\n\u003ctd\u003eYellow Hard\u003c\/td\u003e\n\u003ctd\u003e1470°F (799°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e807-501\u003c\/td\u003e\n\u003ctd\u003e10K\u003c\/td\u003e\n\u003ctd\u003eYellow Easy\u003c\/td\u003e\n\u003ctd\u003e1340°F (727°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e807-502\u003c\/td\u003e\n\u003ctd\u003e10K\u003c\/td\u003e\n\u003ctd\u003eYellow Medium\u003c\/td\u003e\n\u003ctd\u003e1395°F (757°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80C-501\u003c\/td\u003e\n\u003ctd\u003e18K\u003c\/td\u003e\n\u003ctd\u003eYellow Easy\u003c\/td\u003e\n\u003ctd\u003e1425°F (774°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80C-502\u003c\/td\u003e\n\u003ctd\u003e18K\u003c\/td\u003e\n\u003ctd\u003eYellow Medium\u003c\/td\u003e\n\u003ctd\u003e1495°F (813°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80C-503\u003c\/td\u003e\n\u003ctd\u003e18K\u003c\/td\u003e\n\u003ctd\u003eYellow Hard\u003c\/td\u003e\n\u003ctd\u003e1535°F (835°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eFor manufacturing applications, plumb gold solders are recommended instead of repair solders.\u003c\/li\u003e\u003c\/ul\u003e","brand":"Otto Frei","offers":[{"title":"10 Yellow Easy","offer_id":47807132827862,"sku":"807-501","price":84.91,"currency_code":"USD","in_stock":true},{"title":"10 Yellow Medium","offer_id":47807132860630,"sku":"807-502","price":86.19,"currency_code":"USD","in_stock":true},{"title":"14 Yellow Extra Easy","offer_id":43586996633814,"sku":"800-500","price":162.11,"currency_code":"USD","in_stock":true},{"title":"14 Yellow Easy","offer_id":47807132893398,"sku":"800-501","price":168.49,"currency_code":"USD","in_stock":true},{"title":"14 Yellow Medium","offer_id":47807132926166,"sku":"800-502","price":158.92,"currency_code":"USD","in_stock":true},{"title":"14 Yellow Hard","offer_id":47807132958934,"sku":"800-503","price":165.94,"currency_code":"USD","in_stock":true},{"title":"18 Yellow Easy","offer_id":47807132991702,"sku":"80C-501","price":219.53,"currency_code":"USD","in_stock":true},{"title":"18 Yellow Medium","offer_id":47807133024470,"sku":"80C-502","price":219.53,"currency_code":"USD","in_stock":true},{"title":"18 Yellow Hard","offer_id":47807133057238,"sku":"80C-503","price":219.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/10y-14y-and-18y-otto-frei-high-karat-yellow-gold-repair-solders-otto-frei.jpg?v=1719955735"},{"product_id":"white-gold-repair-solder-sheets-10k-14k-18k-20k","title":"10K, 14K, 18K \u0026 20K Otto Frei High Karat White Gold Repair Solders","description":"\u003cp\u003eRepair soldering requires an alloy that flows below the karat of the piece in hand while still matching its color, which is the job these sheets are cut for.\u003c\/p\u003e\u003cp\u003eThese hi-karat white gold repair solders are formulated for professional jewelry repair applications. The cadmium-free sheets provide controlled flow and reliable color match for white gold work, helping you execute clean, precise joints with confidence at the bench.\u003c\/p\u003e\u003cp\u003eThey are available across four karat levels: 10K, 14K, 18K, and 20K White Weld, with multiple flow temperatures to support staged soldering workflows. Each sheet weighs approximately 1 DWT and can be cut into custom paillons or strips.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e100% cadmium-free formulation\u003c\/li\u003e\n\u003cli\u003eHigher gold content than most standard repair solders\u003c\/li\u003e\n\u003cli\u003eLower gold content than the karat of the workpiece, as recommended for repair soldering\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple karats and flow temperatures for staged soldering\u003c\/li\u003e\n\u003cli\u003eIncludes a 20K White Weld option for high-temperature applications\u003c\/li\u003e\n\u003cli\u003eSupplied in sheet form for cutting custom paillons or strips\u003c\/li\u003e\n\u003cli\u003eEach sheet weighs approximately 1 DWT\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAvailable Options\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eKarat\u003c\/th\u003e\n\u003cth\u003eColor \/ Grade\u003c\/th\u003e\n\u003cth\u003eFlow Temperature\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e801-500\u003c\/td\u003e\n\u003ctd\u003e14K\u003c\/td\u003e\n\u003ctd\u003eWhite Extra Easy\u003c\/td\u003e\n\u003ctd\u003e1320°F (716°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e801-501\u003c\/td\u003e\n\u003ctd\u003e14K\u003c\/td\u003e\n\u003ctd\u003eWhite Easy\u003c\/td\u003e\n\u003ctd\u003e1380°F (749°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e801-502\u003c\/td\u003e\n\u003ctd\u003e14K\u003c\/td\u003e\n\u003ctd\u003eWhite Medium\u003c\/td\u003e\n\u003ctd\u003e1440°F (782°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e801-503\u003c\/td\u003e\n\u003ctd\u003e14K\u003c\/td\u003e\n\u003ctd\u003eWhite Hard\u003c\/td\u003e\n\u003ctd\u003e1570°F (854°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e808-501\u003c\/td\u003e\n\u003ctd\u003e10K\u003c\/td\u003e\n\u003ctd\u003eWhite Easy\u003c\/td\u003e\n\u003ctd\u003e1365°F (741°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80E-501\u003c\/td\u003e\n\u003ctd\u003e18K\u003c\/td\u003e\n\u003ctd\u003eWhite Easy\u003c\/td\u003e\n\u003ctd\u003e1465°F (796°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80E-502\u003c\/td\u003e\n\u003ctd\u003e18K\u003c\/td\u003e\n\u003ctd\u003eWhite Medium\u003c\/td\u003e\n\u003ctd\u003e1495°F (813°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80E-503\u003c\/td\u003e\n\u003ctd\u003e18K\u003c\/td\u003e\n\u003ctd\u003eWhite Hard\u003c\/td\u003e\n\u003ctd\u003e1505°F (818°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80W-506\u003c\/td\u003e\n\u003ctd\u003e20K\u003c\/td\u003e\n\u003ctd\u003eWhite Weld\u003c\/td\u003e\n\u003ctd\u003e1610°F (877°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e For manufacturing applications, plumb gold solders are recommended instead of repair solders.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"14 White Extra Easy","offer_id":43586996928726,"sku":"801-500","price":142.97,"currency_code":"USD","in_stock":true},{"title":"10 White Easy","offer_id":47807133253846,"sku":"808-501","price":126.38,"currency_code":"USD","in_stock":true},{"title":"14 White Easy","offer_id":47807133286614,"sku":"801-501","price":161.47,"currency_code":"USD","in_stock":true},{"title":"14 White Medium","offer_id":47807133319382,"sku":"801-502","price":165.3,"currency_code":"USD","in_stock":true},{"title":"14 White Hard","offer_id":47807133352150,"sku":"801-503","price":158.92,"currency_code":"USD","in_stock":true},{"title":"18 White Easy","offer_id":47807133384918,"sku":"80E-501","price":229.1,"currency_code":"USD","in_stock":true},{"title":"18 White Medium","offer_id":47807133417686,"sku":"80E-502","price":241.86,"currency_code":"USD","in_stock":true},{"title":"18 White Hard","offer_id":47807133450454,"sku":"80E-503","price":232.29,"currency_code":"USD","in_stock":true},{"title":"20 White Weld","offer_id":47807133483222,"sku":"80W-506","price":264.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/10w14w18w-and-20ww-otto-frei-high-karat-white-gold-repair-solders-otto-frei.jpg?v=1719955735"},{"product_id":"pre-clipped-yellow-gold-easy-repair-solder-10k-14k-18k","title":"10K Yellow, 14K Yellow \u0026 18K Yellow Otto Frei High Karat Clipped Repair Solders-Easy","description":"\u003cp\u003ePre-clipped yellow gold repair solder for fast, consistent repair soldering at the bench, supplied in uniform 1.0 mm squares.\u003c\/p\u003e\u003cp\u003eThese easy-flow paillons save preparation time and deliver clean, controlled flow for precise repair work. Available in 10K, 14K, and 18K yellow gold formulations, each carries higher gold content than most standard repair solders while remaining below the karat of the workpiece, which is the accepted practice for repair soldering. Each package is a tube holding approximately 1 DWT.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e100% cadmium-free formulation\u003c\/li\u003e\n\u003cli\u003ePre-clipped into uniform 1.0 mm squares for bench-ready convenience\u003c\/li\u003e\n\u003cli\u003eEasy flow grade for controlled, precise repair soldering\u003c\/li\u003e\n\u003cli\u003eHigher gold content than most standard repair solders\u003c\/li\u003e\n\u003cli\u003eLower gold content than the karat of the workpiece, as recommended for repair soldering\u003c\/li\u003e\n\u003cli\u003eSold in tubes containing approximately 1 DWT per package\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAvailable Options\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eKarat\u003c\/th\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003cth\u003eFlow Temperature\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e800-721\u003c\/td\u003e\n\u003ctd\u003e14K\u003c\/td\u003e\n\u003ctd\u003eYellow\u003c\/td\u003e\n\u003ctd\u003e1325°F (718°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e807-721\u003c\/td\u003e\n\u003ctd\u003e10K\u003c\/td\u003e\n\u003ctd\u003eYellow\u003c\/td\u003e\n\u003ctd\u003e1340°F (727°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80C-721\u003c\/td\u003e\n\u003ctd\u003e18K\u003c\/td\u003e\n\u003ctd\u003eYellow\u003c\/td\u003e\n\u003ctd\u003e1425°F (774°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eRepair vs. Manufacturing:\u003c\/strong\u003e For manufacturing applications, fine gold solders are recommended instead of repair solders.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"18K Yellow","offer_id":47807133188310,"sku":"80C-721","price":221.56,"currency_code":"USD","in_stock":true},{"title":"14K Yellow","offer_id":47561579462870,"sku":"800-721","price":160.95,"currency_code":"USD","in_stock":true},{"title":"10K Yellow","offer_id":47807133221078,"sku":"807-721","price":84.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/10y-14y-and-18y-otto-frei-high-karat-clipped-repair-solders-easy-otto-frei.jpg?v=1719955735"},{"product_id":"gold-paste-repair-solder-syringes-18k-14k-ygf","title":"18K Yellow, 14K Yellow, 14K White \u0026 Yellow Gold Filled Repair Paste Solders","description":"\u003cp\u003eReach for a paste repair solder when a piece comes across the bench with an unknown solder history and the join has to stay put. These hi-karat gold repair solders arrive in a ready-to-use syringe with the gold already pre-mixed with paste flux, which streamlines application and helps protect valued heirloom pieces during repair.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGold repair solder blended with paste flux for convenient syringe application\u003c\/li\u003e\n\u003cli\u003eCadmium-free formulation\u003c\/li\u003e\n\u003cli\u003eLower gold content than the workpiece, as recommended for repair soldering\u003c\/li\u003e\n\u003cli\u003eHelps reduce the risk of re-flowing previous joints during repairs\u003c\/li\u003e\n\u003cli\u003eAvailable in yellow, white, and gold-filled options\u003c\/li\u003e\n\u003cli\u003eSold in syringes containing approximately 1 DWT\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAvailable Options\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eKarat \/ Metal\u003c\/th\u003e\n\u003cth\u003eColor \/ Grade\u003c\/th\u003e\n\u003cth\u003eMelting \/ Flow Temperature\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80C-301\u003c\/td\u003e\n\u003ctd\u003e18K\u003c\/td\u003e\n\u003ctd\u003eYellow Easy\u003c\/td\u003e\n\u003ctd\u003e1390°F (754°C) \/ 1450°F (788°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80C-303\u003c\/td\u003e\n\u003ctd\u003e18K\u003c\/td\u003e\n\u003ctd\u003eYellow Hard\u003c\/td\u003e\n\u003ctd\u003e1425°F (774°C) \/ 1475°F (802°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e800-300\u003c\/td\u003e\n\u003ctd\u003e14K\u003c\/td\u003e\n\u003ctd\u003eYellow Extra Easy\u003c\/td\u003e\n\u003ctd\u003e1260°F (682°C) \/ 1295°F (702°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e800-303\u003c\/td\u003e\n\u003ctd\u003e14K\u003c\/td\u003e\n\u003ctd\u003eYellow Hard\u003c\/td\u003e\n\u003ctd\u003e1350°F (732°C) \/ 1390°F (754°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e801-300\u003c\/td\u003e\n\u003ctd\u003e14K\u003c\/td\u003e\n\u003ctd\u003eWhite Extra Easy\u003c\/td\u003e\n\u003ctd\u003e1295°F (702°C) \/ 1345°F (729°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e802-300\u003c\/td\u003e\n\u003ctd\u003eYellow Gold Filled\u003c\/td\u003e\n\u003ctd\u003eExtra Easy\u003c\/td\u003e\n\u003ctd\u003e1135°F (613°C) \/ 1170°F (632°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWarning:\u003c\/strong\u003e Paste flux contains fluorides. Use with appropriate ventilation and follow standard bench safety practices.\u003c\/p\u003e\n\u003cp\u003eRepair solders contain less gold than the work they are recommended for and are intended for repair situations where prior solder grades are unknown. For manufacturing applications, use plumb gold paste solders, which match the karat of the workpiece.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"14 Yellow Extra Easy","offer_id":43586997551318,"sku":"800-300","price":141.5,"currency_code":"USD","in_stock":false},{"title":"14 Yellow Hard","offer_id":47807133876438,"sku":"800-303","price":141.5,"currency_code":"USD","in_stock":true},{"title":"14 White Extra Easy","offer_id":47807133843670,"sku":"801-300","price":140.72,"currency_code":"USD","in_stock":true},{"title":"18 Yellow Easy","offer_id":47807133941974,"sku":"80C-301","price":197.7,"currency_code":"USD","in_stock":true},{"title":"18 Yellow Hard","offer_id":47807133909206,"sku":"80C-303","price":187.92,"currency_code":"USD","in_stock":true},{"title":"Yellow Gold Filled Extra Easy","offer_id":47807133810902,"sku":"802-300","price":23.44,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/18y-14y-14w-and-ygf-repair-paste-solders-otto-frei.jpg?v=1719955734"},{"product_id":"yellow-gold-plumb-solders-14k-18k-cadmium-free","title":"Gold Plumb Solders – Otto Frei Yellow Gold Plumb Solders, 14K \u0026 18K","description":"\u003cp\u003eReach for a plumb gold solder when a seam has to carry the same karat as the metal around it. These yellow gold plumb solders are made to the plumb standard, so the gold content matches the karat mark: 14K solders are .585 gold and 18K solders are .750 gold. All of them are 100% cadmium free.\u003c\/p\u003e\n\n\u003cp\u003eUnlike repair solders, which use a lower gold content for easier flow, plumb solders are built for \u003cem\u003emanufacturing applications\u003c\/em\u003e where holding true gold quality matters. Because they carry that full gold content, they flow at higher temperatures than repair solders, which suits jewelers who need strength, integrity, and compliance with gold standards. Each piece weighs approximately 1 DWT.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e100% cadmium free formulation\u003c\/li\u003e\n\u003cli\u003eMade to the plumb standard, so karat content matches the mark\u003c\/li\u003e\n\u003cli\u003e14K solders contain .585 gold; 18K solders contain .750 gold\u003c\/li\u003e\n\u003cli\u003eAvailable in Extra Easy, Easy, Medium and Hard flow grades\u003c\/li\u003e\n\u003cli\u003eDesigned for manufacturing applications requiring karat accuracy\u003c\/li\u003e\n\u003cli\u003eSuitable where long-term durability and gold compliance are critical\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAvailable Options\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eKarat\u003c\/th\u003e\n\u003cth\u003eFlow Grade\u003c\/th\u003e\n\u003cth\u003eFlow Temperature\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e800-550\u003c\/td\u003e\n\u003ctd\u003e14K Yellow\u003c\/td\u003e\n\u003ctd\u003eExtra Easy\u003c\/td\u003e\n\u003ctd\u003e1295°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e800-551\u003c\/td\u003e\n\u003ctd\u003e14K Yellow\u003c\/td\u003e\n\u003ctd\u003eEasy\u003c\/td\u003e\n\u003ctd\u003e1340°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e800-552\u003c\/td\u003e\n\u003ctd\u003e14K Yellow\u003c\/td\u003e\n\u003ctd\u003eMedium\u003c\/td\u003e\n\u003ctd\u003e1390°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e800-553\u003c\/td\u003e\n\u003ctd\u003e14K Yellow\u003c\/td\u003e\n\u003ctd\u003eHard\u003c\/td\u003e\n\u003ctd\u003e1480°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80C-551\u003c\/td\u003e\n\u003ctd\u003e18K Yellow\u003c\/td\u003e\n\u003ctd\u003eEasy\u003c\/td\u003e\n\u003ctd\u003e1430°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80C-552\u003c\/td\u003e\n\u003ctd\u003e18K Yellow\u003c\/td\u003e\n\u003ctd\u003eMedium\u003c\/td\u003e\n\u003ctd\u003e1475°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80C-553\u003c\/td\u003e\n\u003ctd\u003e18K Yellow\u003c\/td\u003e\n\u003ctd\u003eHard\u003c\/td\u003e\n\u003ctd\u003e1550°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cp\u003eUse plumb gold solders for new jewelry creation where karat accuracy and long-term durability are critical. For repair work, consider lower-temperature repair solders instead.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"14K Yellow Extra Easy","offer_id":43586997780694,"sku":"800-550","price":205.49,"currency_code":"USD","in_stock":true},{"title":"14K Yellow Easy","offer_id":47807133614294,"sku":"800-551","price":205.49,"currency_code":"USD","in_stock":true},{"title":"14K Yellow Medium","offer_id":47807133647062,"sku":"800-552","price":205.49,"currency_code":"USD","in_stock":true},{"title":"14K Yellow Hard","offer_id":47807133679830,"sku":"800-553","price":205.49,"currency_code":"USD","in_stock":true},{"title":"18K Yellow Easy","offer_id":47807133712598,"sku":"80C-551","price":264.19,"currency_code":"USD","in_stock":true},{"title":"18K Yellow Medium","offer_id":47807133745366,"sku":"80C-552","price":264.83,"currency_code":"USD","in_stock":true},{"title":"18K Yellow Hard","offer_id":47807133778134,"sku":"80C-553","price":265.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/14ky-and-18ky-otto-frei-yellow-gold-plumb-solders-otto-frei.jpg?v=1719955734"},{"product_id":"white-gold-plumb-solders-14k-18k-19k-sheet","title":"14K,18K \u0026 19K Otto Frei White Gold Plumb Solders","description":"\u003cp\u003eManufacturing work requires the solder to hold the same gold standard as the piece it joins, and that is what a plumb solder is for.\u003c\/p\u003e\u003cp\u003eThese plumb white gold solders are manufactured to the same gold content as marked, so a solder labeled 14K contains the true plumb standard of .585 (14K) gold. Unlike repair solders, which are intentionally formulated below karat mark for easier flow, plumb solders are designed for manufacturing applications where strict gold quality standards must be maintained. Plumb solders flow at higher relative temperatures than their repair solder counterparts.\u003c\/p\u003e\u003cp\u003eAvailable in 14K, 18K and 19K white gold formulations, these solders span a range of flow temperatures and grades, from Extra Easy through Hard and Weld, giving jewelers precise control over sequential soldering operations. All formulas are cadmium free and nickel based, supplied in sheet form at approximately 1 DWT per sheet.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue plumb gold content\u003c\/strong\u003e, gold content matches the karat mark exactly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesigned for manufacturing\u003c\/strong\u003e, maintains the gold quality standards production work requires\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple grades available\u003c\/strong\u003e: Extra Easy, Easy, Medium, Hard and Weld for sequential soldering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e14K, 18K and 19K formulations\u003c\/strong\u003e, a broad karat range to match the alloy being worked\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCadmium free\u003c\/strong\u003e, safer for the studio environment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNickel-based white gold formula\u003c\/strong\u003e, consistent with standard white gold alloy systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold in sheet form\u003c\/strong\u003e, approximately 1 DWT per sheet\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAvailable Options\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eKarat\u003c\/th\u003e\n\u003cth\u003eGrade\u003c\/th\u003e\n\u003cth\u003eFlow Temperature\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e801-550\u003c\/td\u003e\n\u003ctd\u003e14K White\u003c\/td\u003e\n\u003ctd\u003eExtra Easy\u003c\/td\u003e\n\u003ctd\u003e1320°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e801-551\u003c\/td\u003e\n\u003ctd\u003e14K White\u003c\/td\u003e\n\u003ctd\u003eEasy\u003c\/td\u003e\n\u003ctd\u003e1390°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e801-552\u003c\/td\u003e\n\u003ctd\u003e14K White\u003c\/td\u003e\n\u003ctd\u003eMedium\u003c\/td\u003e\n\u003ctd\u003e1450°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e801-553\u003c\/td\u003e\n\u003ctd\u003e14K White\u003c\/td\u003e\n\u003ctd\u003eHard\u003c\/td\u003e\n\u003ctd\u003e1570°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80E-551\u003c\/td\u003e\n\u003ctd\u003e18K White\u003c\/td\u003e\n\u003ctd\u003eEasy\u003c\/td\u003e\n\u003ctd\u003e1460°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80E-553\u003c\/td\u003e\n\u003ctd\u003e18K White\u003c\/td\u003e\n\u003ctd\u003eHard\u003c\/td\u003e\n\u003ctd\u003e1550°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80W-556\u003c\/td\u003e\n\u003ctd\u003e19K White\u003c\/td\u003e\n\u003ctd\u003eWeld\u003c\/td\u003e\n\u003ctd\u003e1685°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePlumb solders flow at higher relative temperatures than repair solders, so plan torch work and sequential soldering accordingly.\u003c\/li\u003e\n\u003cli\u003eThese solders are intended for manufacturing use, not general repair work where lower-karat repair solders are typically preferred.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Otto Frei","offers":[{"title":"14K White Extra Easy","offer_id":43586998010070,"sku":"801-550","price":206.77,"currency_code":"USD","in_stock":true},{"title":"14K White Easy","offer_id":47807134236886,"sku":"801-551","price":206.77,"currency_code":"USD","in_stock":true},{"title":"14K White Medium","offer_id":47807134269654,"sku":"801-552","price":206.77,"currency_code":"USD","in_stock":true},{"title":"14K White Hard","offer_id":47807134302422,"sku":"801-553","price":206.77,"currency_code":"USD","in_stock":true},{"title":"18K White Easy","offer_id":47807134335190,"sku":"80E-551","price":264.19,"currency_code":"USD","in_stock":true},{"title":"18K White Hard","offer_id":47807134367958,"sku":"80E-553","price":264.19,"currency_code":"USD","in_stock":true},{"title":"19K White Weld","offer_id":47807134400726,"sku":"80W-556","price":280.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/14k18k-and-19k-otto-frei-white-gold-plumb-solders-otto-frei.jpg?v=1719955734"},{"product_id":"wr-cobb-white-gold-plumb-solder-cadmium-free-10k-14k-18k","title":"Cobb White Gold Plumb Solders-Cadmium Free","description":"\u003cp\u003eWR Cobb White Gold Plumb Solders are cadmium-free sheet solders formulated for professional jewelers working with white gold alloys. Available in 10K, 14K, and 18K formulations across Easy, Medium, and Hard tempers, these solders provide reliable flow characteristics to match the demands of your specific assembly sequence. Each sheet weighs approximately 1 DWT, making them practical for bench-level use.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCadmium-free formula for safer studio use\u003c\/li\u003e\n\u003cli\u003eAvailable in Easy, Medium, and Hard tempers to suit sequential soldering workflows\u003c\/li\u003e\n\u003cli\u003eCovers 10K, 14K, and 18K white gold applications\u003c\/li\u003e\n\u003cli\u003eSold in sheet form for easy cutting and placement\u003c\/li\u003e\n\u003cli\u003eEach sheet weighs approximately 1 DWT\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eForm\u003c\/th\u003e\n\u003ctd\u003eSheet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight per Sheet\u003c\/th\u003e\n\u003ctd\u003eApproximately 1 DWT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCadmium Free\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eWR Cobb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAvailable Options\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eKarat\u003c\/th\u003e\n\u003cth\u003eTemper\u003c\/th\u003e\n\u003cth\u003eFlow Temperature\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80E-753\u003c\/td\u003e\n\u003ctd\u003e18K White\u003c\/td\u003e\n\u003ctd\u003eHard\u003c\/td\u003e\n\u003ctd\u003e1600°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e801-751\u003c\/td\u003e\n\u003ctd\u003e14K White\u003c\/td\u003e\n\u003ctd\u003eEasy\u003c\/td\u003e\n\u003ctd\u003e1325°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e801-752\u003c\/td\u003e\n\u003ctd\u003e14K White\u003c\/td\u003e\n\u003ctd\u003eMedium\u003c\/td\u003e\n\u003ctd\u003e1375°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e808-751\u003c\/td\u003e\n\u003ctd\u003e10K White\u003c\/td\u003e\n\u003ctd\u003eEasy\u003c\/td\u003e\n\u003ctd\u003e1350°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e808-752\u003c\/td\u003e\n\u003ctd\u003e10K White\u003c\/td\u003e\n\u003ctd\u003eMedium\u003c\/td\u003e\n\u003ctd\u003e1450°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"WR Cobb","offers":[{"title":"14K White Easy","offer_id":43586998239446,"sku":"801-751","price":289.38,"currency_code":"USD","in_stock":true},{"title":"10K White Easy","offer_id":47807134073046,"sku":"808-751","price":186.79,"currency_code":"USD","in_stock":true},{"title":"10K White Medium","offer_id":47807134105814,"sku":"808-752","price":185.54,"currency_code":"USD","in_stock":true},{"title":"14K White Medium","offer_id":47807134138582,"sku":"801-752","price":299.12,"currency_code":"USD","in_stock":true},{"title":"18K White Hard","offer_id":47807134171350,"sku":"80E-753","price":358.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/cobb-white-gold-plumb-solders-cadmium-free-otto-frei.jpg?v=1719955734"},{"product_id":"gold-clipped-plumb-easy-flow-cadmium-free-solder-14ky-18ky-1dwt","title":"Gold Clipped Plumb Easy Flow Cadmium Free Solder – 1 DWT Packs","description":"\u003cp\u003eClipped plumb gold solder for jewelers who need a clean, reliable join at the bench without cadmium in the alloy. Each clip is a precision-cut 1.0 mm × 1.0 mm square of plumb gold, offered in 18K yellow and 14K yellow, and classified as easy flow relative to the other solders in this clipped plumb gold series. Each package contains approximately 1 DWT of solder.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCadmium-free formulation for safer studio use\u003c\/li\u003e\n\u003cli\u003eEasy flow designation, the lower flow temperature within the clipped plumb gold series\u003c\/li\u003e\n\u003cli\u003eSupplied in uniform 1.0 mm × 1.0 mm square clips for consistent metering\u003c\/li\u003e\n\u003cli\u003eAvailable in 14K yellow and 18K yellow plumb gold alloys\u003c\/li\u003e\n\u003cli\u003eSold in packages of approximately 1 DWT each\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAvailable Options\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eAlloy\u003c\/th\u003e\n\u003cth\u003eFlow Temperature\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80C-731\u003c\/td\u003e\n\u003ctd\u003e18K Yellow\u003c\/td\u003e\n\u003ctd\u003e1425°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e800-731\u003c\/td\u003e\n\u003ctd\u003e14K Yellow\u003c\/td\u003e\n\u003ctd\u003e1340°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Otto Frei","offers":[{"title":"18K Yellow","offer_id":47807134433494,"sku":"80C-731","price":264.19,"currency_code":"USD","in_stock":true},{"title":"14K Yellow","offer_id":43586998862038,"sku":"800-731","price":206.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/18ky-and-14ky-clipped-plumb-gold-easy-flow-cadmium-free-solders-1-dwt-packs-otto-frei.png?v=1719955734"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/collections\/alloys-and-solders-otto-frei.jpg?v=1726692467","url":"https:\/\/www.ottofrei.com\/it\/collections\/jewelry-solders-alloys.oembed?page=3","provider":"Otto Frei","version":"1.0","type":"link"}