{"title":"Castaldo","description":"\u003cp\u003eDiscover premium jewelry molding solutions from Castaldo. Our professional-grade rubber delivers exceptional detail reproduction for perfect jewelry casting results. From Gold Label to Quick-Sil, find durable, flexible mold making materials trusted by jewelers worldwide. Create flawless molds with superior elasticity and tear resistance.\u003c\/p\u003e","products":[{"product_id":"castaldo-liquacast-no-shrinkage-liquid-mold-rubber-10-1","title":"Castaldo LiquaCast No Shrinkage Liquid Mold Rubber","description":"\u003cp\u003eCastaldo LiquaCast is a two-part liquid mold rubber designed for professional jewelers and wax carvers who need accurate copies of delicate models without the heat and pressure of vulcanization. This formula produces pink rubber molds with \u003cstrong\u003eno shrinkage\u003c\/strong\u003e and outstanding reproduction of fine design details — ideal for preserving intricate wax carvings, organic models, or any original that cannot withstand conventional vulcanizing conditions.\u003c\/p\u003e\u003cp\u003eUse LiquaCast whenever you need a backup copy of a wax design, for limited production runs, or any time you cannot risk losing your original model. The rubber cures at room temperature in 16–24 hours, and each kit includes precise, detailed instructions for use.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eVacuuming is recommended for best results. If a vacuum pump is not available, good results can still be obtained by dipping the model in liquid rubber rather than pouring directly, or by brushing on a small quantity of the mixture and inspecting for bubbles before pouring the full mold.\u003c\/em\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Castaldo USA was sold to a company in the United Kingdom, and all Castaldo products are now manufactured in the UK. This specific LiquaCast formula — which mixes at a 10:1 ratio — is no longer being produced. The current version mixes at a 1:1 ratio. All Castaldo jewelry manufacturing products are intended for professional use only by persons familiar with jewelry casting techniques.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTwo-part liquid mold rubber system — no heat or pressure vulcanization required\u003c\/li\u003e\n\u003cli\u003eZero shrinkage for accurate, true-to-original reproductions\u003c\/li\u003e\n\u003cli\u003eProduces pink rubber molds with exceptional detail reproduction\u003c\/li\u003e\n\u003cli\u003eCures at room temperature in 16–24 hours\u003c\/li\u003e\n\u003cli\u003eSuitable for wax models, organic materials, and heat-sensitive originals\u003c\/li\u003e\n\u003cli\u003eIdeal for backup copies, limited production runs, and protecting irreplaceable originals\u003c\/li\u003e\n\u003cli\u003eIncludes detailed instructions for use\u003c\/li\u003e\n\u003cli\u003eThis formula mixes at a 10:1 ratio (Part A to Part B)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eTwo-part liquid mold rubber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMold Color\u003c\/th\u003e\n\u003ctd\u003ePink\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMix Ratio (this formula)\u003c\/th\u003e\n\u003ctd\u003e10:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCure Method\u003c\/th\u003e\n\u003ctd\u003eRoom temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCure Time\u003c\/th\u003e\n\u003ctd\u003e16–24 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShrinkage\u003c\/th\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVacuuming\u003c\/th\u003e\n\u003ctd\u003eRecommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIntended Use\u003c\/th\u003e\n\u003ctd\u003eProfessional use only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer Origin\u003c\/th\u003e\n\u003ctd\u003eUnited Kingdom\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\u003eSize\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e122.850-2.2LB\u003c\/td\u003e\n\u003ctd\u003e2.2 Lb (1 kg) Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e122.850-8.8LB\u003c\/td\u003e\n\u003ctd\u003e8.8 Lb (4 kg) Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e122.850-17LB\u003c\/td\u003e\n\u003ctd\u003e17 Lb (7.27 kg) Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e122.850-44LB\u003c\/td\u003e\n\u003ctd\u003e44 Lb (20 kg) Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eThis listing covers the original 10:1 mix-ratio formula. The current Castaldo LiquaCast formulation mixes at 1:1 and is a separate product.\u003c\/li\u003e\n\u003cli\u003eNot suitable for use with models that require high-heat vulcanization resistance testing.\u003c\/li\u003e\n\u003cli\u003eFor professional use only — intended for individuals experienced in jewelry casting techniques.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Castaldo","offers":[{"title":"2.2 Lb Kit","offer_id":47551685394646,"sku":"122.850-2.2LB","price":98.0,"currency_code":"USD","in_stock":false},{"title":"8.8 Lb Kit","offer_id":47551685427414,"sku":"122.850-8.8LB","price":265.0,"currency_code":"USD","in_stock":true},{"title":"17 Lb Kit","offer_id":47551685460182,"sku":"122.850-17LB","price":345.0,"currency_code":"USD","in_stock":true},{"title":"44 Lb Kit","offer_id":47551685492950,"sku":"122.850-44LB","price":675.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/castaldo-liquacast-no-shrinkage-liquid-mold-rubber-otto-frei.jpg?v=1719959035"},{"product_id":"castaldo-quick-sil-rtv-silicone-putty-firm-flexible-2-2lb-kit","title":"Castaldo Quick-Sil Firm \u0026 Flexible Two Part RTV Silicone Putty Mold Rubber-1 Kg (2.2 Lbs.) Kit","description":"\u003cp\u003eCastaldo Quick-Sil Firm \u0026amp; Flexible is a two-part room temperature vulcanizing (RTV) silicone putty that produces tough, strong, long-lasting production jewelry molds for lost wax casting with \u003cstrong\u003e0% shrinkage\u003c\/strong\u003e. Safe, non-hazardous, and non-toxic, it produces no unpleasant fumes or odors — making it a reliable choice for professional studio environments.\u003c\/p\u003e\u003cp\u003eMixing is straightforward: combine equal parts of Part A and Part B by hand. No precise measurement or vacuum equipment is required to achieve optimum results. While no vulcanizing is needed, best results are achieved when the mixed putty is clamped under pressure — such as in a vise or an unheated mold press. Detailed instructions are included with every kit.\u003c\/p\u003e\u003cp\u003eBeyond lost wax casting molds, Castaldo Quick-Sil Firm \u0026amp; Flexible is also suited for \u003cstrong\u003edirect casting of low-temperature metals\u003c\/strong\u003e such as lead, tin, and pewter.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eFirm \u0026amp; Flexible is the original Quick-Sil formula. A Soft \u0026amp; Flexible version is also available — see part number 122.6135SOFT.\u003c\/em\u003e\u003c\/p\u003e\u003cp\u003eIntended for professional use only by persons familiar with jewelry casting techniques.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTwo-part RTV silicone putty — no vulcanizing required\u003c\/li\u003e\n\u003cli\u003e0% shrinkage for accurate, repeatable molds\u003c\/li\u003e\n\u003cli\u003eMix equal parts A and B by hand — no precise measuring or vacuum needed\u003c\/li\u003e\n\u003cli\u003eSafe, non-hazardous, and non-toxic with no fumes or odors\u003c\/li\u003e\n\u003cli\u003eWorks best when clamped under pressure during cure\u003c\/li\u003e\n\u003cli\u003eSuitable for lost wax casting molds and direct casting of low-temperature metals\u003c\/li\u003e\n\u003cli\u003eDetailed instructions included\u003c\/li\u003e\n\u003cli\u003eOriginal Firm \u0026amp; Flexible formula\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFormula\u003c\/th\u003e\n\u003ctd\u003eTwo-part RTV silicone putty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShrinkage\u003c\/th\u003e\n\u003ctd\u003e0%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWork Time\u003c\/th\u003e\n\u003ctd\u003e1–2 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCure Time\u003c\/th\u003e\n\u003ctd\u003eApproximately 15 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKit Size\u003c\/th\u003e\n\u003ctd\u003e2.2 lbs. (1 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHazard Rating\u003c\/th\u003e\n\u003ctd\u003eNon-hazardous, non-toxic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIntended Use\u003c\/th\u003e\n\u003ctd\u003eProfessional use only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCastaldo Quick-Sil Firm \u0026amp; Flexible Part A and Part B — 2.2 lb. (1 kg) kit\u003c\/li\u003e\n\u003cli\u003eDetailed instructions for use\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWork time is 1–2 minutes.\u003c\/strong\u003e Plan your workflow accordingly before mixing. This product is intended for professional use only and should be used exclusively by persons familiar with jewelry casting techniques. For a softer durometer option, see the Soft \u0026amp; Flexible version, part number 122.6135SOFT.\u003c\/p\u003e","brand":"Castaldo","offers":[{"title":"Default Title","offer_id":43579569602774,"sku":"122.613","price":125.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/castaldo-quick-sil-firm-and-flexible-two-part-rtv-silicone-putty-mold-rubber-1-kg-2-2-lbs-kit-otto-frei.jpg?v=1719958590"},{"product_id":"castaldo-super-high-strength-silicone-mold-rubber-strips-5lb","title":"Castaldo Silicon Jewelry Molding Rubber- Super High Strength-Strips-5 Lb Box","description":"\u003cp\u003eCastaldo\u003csup\u003e®\u003c\/sup\u003e Super High Strength\u003csup\u003e™\u003c\/sup\u003e Silicone Jewelry Molding Rubber delivers exceptional performance for professional jewelers who demand precision, durability, and efficiency in their casting workflow. This silicone mold rubber is engineered to be stronger than any other silicone molding rubber on the market—producing complex molds that resist tearing and last through extensive use. Sold in a convenient 5 lb box of pre-cut strips, it is ready to use straight out of the box.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy mold cutting\u003c\/strong\u003e—cuts like butter for effortless mold preparation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior tear resistance\u003c\/strong\u003e—strong enough to handle complex mold geometries without failure\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmooth, shiny mold surface\u003c\/strong\u003e—produces a mirror-like finish that transfers directly to wax injections, reducing post-cast polishing time\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-releasing formula\u003c\/strong\u003e—waxes release cleanly without messy mold release sprays\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy packing\u003c\/strong\u003e—spreads and presses into place with your fingers, just like putty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong mold life\u003c\/strong\u003e—molds last through repeated wax injections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-cut strip format\u003c\/strong\u003e—convenient sizing for quick, consistent packing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eCastaldo\u003csup\u003e®\u003c\/sup\u003e Super High Strength\u003csup\u003e™\u003c\/sup\u003e Silicone Jewelry Molding Rubber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFormat\u003c\/th\u003e\n\u003ctd\u003ePre-cut strips\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStrip Dimensions\u003c\/th\u003e\n\u003ctd\u003e3\/8\" x 2 7\/8\" x 18\" (6 mm x 7.3 cm x 45.7 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBox Weight\u003c\/th\u003e\n\u003ctd\u003e5 lb (2.27 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold As\u003c\/th\u003e\n\u003ctd\u003ePer box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMold Release Required\u003c\/th\u003e\n\u003ctd\u003eNo—self-releasing formula\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOne 5 lb box of Castaldo\u003csup\u003e®\u003c\/sup\u003e Super High Strength\u003csup\u003e™\u003c\/sup\u003e Silicone Jewelry Molding Rubber strips\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Castaldo","offers":[{"title":"Default Title","offer_id":43579570290902,"sku":"122.591","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/castaldo-silicon-jewelry-molding-rubber-super-high-strength-strips-5-lb-box-otto-frei.jpg?v=1719958590"},{"product_id":"castaldo-econosil-red-jewelry-molding-rubber-strips-5lb","title":"Castaldo Econosil Red-Silicon Jewelry Molding Rubber-Strips-5 Lb Box","description":"\u003cp\u003eCastaldo\u003csup\u003e®\u003c\/sup\u003e Econosil\u003csup\u003e®\u003c\/sup\u003e Jewelry Molding Rubber is a harder, firmer version of Castaldo\u003csup\u003e®\u003c\/sup\u003e Super High Strength™ jewelry molding rubber, offered at a lower cost. Like its counterpart, Econosil\u003csup\u003e®\u003c\/sup\u003e is a putty-like material engineered to produce strong, tough, production-quality rubber molds.\u003c\/p\u003e\u003cp\u003eMolds made with Castaldo\u003csup\u003e®\u003c\/sup\u003e Econosil\u003csup\u003e®\u003c\/sup\u003e cut like butter and deliver waxes with a high-shine finish. No messy sprays or release powders are required—waxes self-release easily, streamlining your production workflow. The material is a distinctive brick-red\/brown color and is lined with special release paper on both sides for easy handling.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHarder, firmer formulation compared to Castaldo\u003csup\u003e®\u003c\/sup\u003e Super High Strength™ rubber\u003c\/li\u003e\n\u003cli\u003eProduces strong, tough, production-quality rubber molds\u003c\/li\u003e\n\u003cli\u003eCuts easily for clean, precise mold opening\u003c\/li\u003e\n\u003cli\u003eDelivers high-shine wax finish\u003c\/li\u003e\n\u003cli\u003eWaxes self-release — no sprays or powders needed\u003c\/li\u003e\n\u003cli\u003eLined with special release paper on both sides\u003c\/li\u003e\n\u003cli\u003eComplete instructions enclosed in each box\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\u003eBrick-red\/brown\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStrip Dimensions\u003c\/th\u003e\n\u003ctd\u003e18\" x 2 7\/8\" x approx. 3\/8\" (45.7 cm x 7.3 cm x approx. 0.6 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFormat\u003c\/th\u003e\n\u003ctd\u003ePre-cut strips with release paper on both sides\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePackage Weight\u003c\/th\u003e\n\u003ctd\u003e5 lb box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInstructions\u003c\/th\u003e\n\u003ctd\u003eIncluded in each box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e5 lb box of Castaldo\u003csup\u003e®\u003c\/sup\u003e Econosil\u003csup\u003e®\u003c\/sup\u003e jewelry molding rubber strips\u003c\/li\u003e\n\u003cli\u003eComplete instructions\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Castaldo","offers":[{"title":"Default Title","offer_id":43579570585814,"sku":"122.582","price":84.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/castaldo-econosil-red-silicon-jewelry-molding-rubber-strips-5-lb-box-otto-frei.jpg?v=1719958590"},{"product_id":"castaldo-silicone-mold-release-spray-340g","title":"Castaldo Mold Release Spray","description":"\u003cp\u003eCastaldo Silicone Jewelry Mold Release Spray is a professional-grade silicone releasing agent designed to prevent wax from sticking inside rubber molds during the injection process. Apply a small amount before injecting wax, and the spray creates a reliable barrier that allows clean, easy removal of wax patterns without tearing or distortion. Safe, non-toxic, colorless, and odorless, this spray is formulated for regular use in production casting environments.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePrevents wax from adhering to rubber molds during and after injection\u003c\/li\u003e\n\u003cli\u003eSafe, non-toxic formula — colorless and odorless\u003c\/li\u003e\n\u003cli\u003eNon-flammable; contains no CFCs or VOCs\u003c\/li\u003e\n\u003cli\u003eLong-lasting release performance per application\u003c\/li\u003e\n\u003cli\u003eConvenient aerosol can for precise, controlled dispensing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eSilicone Mold Release Spray\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFormat\u003c\/th\u003e\n\u003ctd\u003eAerosol can\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNet Weight\u003c\/th\u003e\n\u003ctd\u003e340 grams\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlammable\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCFC-Free\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVOC-Free\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eToxic\u003c\/th\u003e\n\u003ctd\u003eNon-toxic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eShipping Restriction:\u003c\/strong\u003e This item cannot be shipped outside the United States or via air freight due to its aerosol\/hazardous classification.\u003c\/p\u003e","brand":"Castaldo","offers":[{"title":"Default Title","offer_id":43579570716886,"sku":"122.640","price":22.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/castaldo-mold-release-spray-otto-frei.jpg?v=1719958590"},{"product_id":"castaldo-liquaglass-no-shrink-clear-rtv-mold-rubber-1-kilo-kit","title":"Castaldo LiquaGlass-No Shrink, See-Thru Room Temperature Mold Rubber-1 Kilo Kit","description":"\u003cp\u003e\u003cstrong\u003eCastaldo LiquaGlass™\u003c\/strong\u003e is a clear, two-part liquid molding rubber for creating see-through RTV molds with \u003cstrong\u003ezero shrinkage\u003c\/strong\u003e. Ideal for jewelry mold making, LiquaGlass™ offers clarity, flexibility, and strength—so you can \u003cem\u003esee\u003c\/em\u003e your work as you cut and inject wax. This 1 kilo kit includes 450 grams each of Part A and Part B and cures at room temperature.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e100% clear RTV molding rubber—see through your molds as you inject wax\u003c\/li\u003e\n\u003cli\u003eZero shrinkage (\u003cstrong\u003e0.0%\u003c\/strong\u003e) for high dimensional accuracy\u003c\/li\u003e\n\u003cli\u003eEasy 1:1 mix ratio by weight—no volume guesswork\u003c\/li\u003e\n\u003cli\u003eLow viscosity (≈ 1,200 cps) for smooth mixing and bubble-free casting\u003c\/li\u003e\n\u003cli\u003eCures at room temperature (70 °F \/ 21 °C) in 16–24 hours\u003c\/li\u003e\n\u003cli\u003eClear blue-green finish for maximum visibility during mold cutting\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMix Ratio (by Weight)\u003c\/th\u003e\n\u003ctd\u003e1 : 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eViscosity\u003c\/th\u003e\n\u003ctd\u003e1,200 cps (very low)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHardness\u003c\/th\u003e\n\u003ctd\u003eShore A 50 ± 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShrinkage\u003c\/th\u003e\n\u003ctd\u003e0.0%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecific Gravity\u003c\/th\u003e\n\u003ctd\u003e1.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTensile Strength (Before Break)\u003c\/th\u003e\n\u003ctd\u003e2.1 N\/mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eElongation (Before Break)\u003c\/th\u003e\n\u003ctd\u003e750%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTear Strength (Die C)\u003c\/th\u003e\n\u003ctd\u003e12.9 N\/mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd\u003eClear blue\/green\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKit Net Weight\u003c\/th\u003e\n\u003ctd\u003e1 kilo (900 g usable rubber)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e450 g Part A\u003c\/li\u003e\n\u003cli\u003e450 g Part B\u003c\/li\u003e\n\u003cli\u003eInstruction sheet and mixing guide\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstructions for Use\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eShake both Part A and Part B well before use.\u003c\/li\u003e\n\u003cli\u003eMeasure equal parts by weight (1:1 ratio) using a precise scale—do not estimate or measure by volume.\u003c\/li\u003e\n\u003cli\u003ePour Part A into Part B and mix by hand for 3–4 minutes until color is uniform, scraping the sides and bottom of the bowl.\u003c\/li\u003e\n\u003cli\u003eVacuum the mixture for approximately 5 minutes to remove air bubbles—it should rise and collapse once.\u003c\/li\u003e\n\u003cli\u003ePour into the mold frame, avoiding air entrapment, then vacuum again for 3 minutes.\u003c\/li\u003e\n\u003cli\u003eAllow to cure at room temperature (77 °F \/ 25 °C) for 16–24 hours. Do not disturb during cure.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eApproximate Rubber Usage Guide\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMold Frame Size\u003c\/th\u003e\n\u003cth\u003ePart A (g)\u003c\/th\u003e\n\u003cth\u003ePart B (g)\u003c\/th\u003e\n\u003cth\u003eTotal (g)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e0.75″ (19 mm)\u003c\/td\u003e\n\u003ctd\u003e60 g\u003c\/td\u003e\n\u003ctd\u003e60 g\u003c\/td\u003e\n\u003ctd\u003e120 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.00″ (25 mm)\u003c\/td\u003e\n\u003ctd\u003e77 g\u003c\/td\u003e\n\u003ctd\u003e77 g\u003c\/td\u003e\n\u003ctd\u003e154 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.25″ (32 mm)\u003c\/td\u003e\n\u003ctd\u003e105 g\u003c\/td\u003e\n\u003ctd\u003e105 g\u003c\/td\u003e\n\u003ctd\u003e210 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.50″ (38 mm)\u003c\/td\u003e\n\u003ctd\u003e113 g\u003c\/td\u003e\n\u003ctd\u003e113 g\u003c\/td\u003e\n\u003ctd\u003e226 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePorous materials such as wood, terra cotta, and plaster must be sealed with wax, PVA, or potter's soap before casting.\u003c\/li\u003e\n\u003cli\u003eLiquaGlass™ is \u003cem\u003enot a silicone rubber\u003c\/em\u003e; follow the manufacturer's mixing and vacuuming instructions carefully.\u003c\/li\u003e\n\u003cli\u003eLonger cure times produce stronger, more stable molds without deformation.\u003c\/li\u003e\n\u003cli\u003eStore unmixed components in a cool, dry area (50–80 °F \/ 10–27 °C) with containers sealed to prevent moisture contamination.\u003c\/li\u003e\n\u003cli\u003eWear gloves and protective eyewear when mixing and vacuuming.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Castaldo","offers":[{"title":"Default Title","offer_id":43579571470550,"sku":"122.603","price":105.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/castaldo-liquaglass-no-shrink-see-thru-room-temperature-mold-rubber-1-kilo-kit-otto-frei.jpg?v=1719958587"},{"product_id":"castaldo-liquacast-long-life-rtv-molding-rubber-1kg-kit","title":"Castaldo LiquaCast Long-Life Jewelry Molding Rubber-1 Kilo Kit","description":"\u003cp\u003eLiquaCast® Long-Life is Castaldo's yellow, 0% shrinkage RTV liquid molding rubber engineered for extended mold life, added strength, added tear resistance, and a firmer feel. The firmer durometer helps maintain delicate detail during wax injection—ideal for thin filigree, fine channels, difficult undercuts, spirals, and CAD-CAM resin or wax patterns.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e0% shrinkage for dimensional consistency of patterns and castings.\u003c\/li\u003e\n\u003cli\u003eFirmer, tougher rubber for durability and tear resistance through repeated use.\u003c\/li\u003e\n\u003cli\u003eLow viscosity for easy measuring, mixing, vacuuming, and pouring.\u003c\/li\u003e\n\u003cli\u003eEasy 1:1 mix ratio by weight or volume—simple, reliable processing.\u003c\/li\u003e\n\u003cli\u003eDesigned to resist softening or degradation when molds are stored properly over time.\u003c\/li\u003e\n\u003cli\u003eCompatible with most CAD-CAM resins and waxes; use a barrier coat if required (see Notes).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal Kit Weight\u003c\/th\u003e\n\u003ctd\u003e2.2 lb (1 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd\u003eYellow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShrinkage\u003c\/th\u003e\n\u003ctd\u003e0%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMix Ratio\u003c\/th\u003e\n\u003ctd\u003e1:1 (Part A : Part B) by weight or volume\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWorking Time (Pot Life)\u003c\/th\u003e\n\u003ctd\u003eApprox. 45–60 minutes at 77°F (25°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoom-Temperature Cure\u003c\/th\u003e\n\u003ctd\u003e16–24 hours at 77°F (25°C); longer cure improves mold quality\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAccelerated Cure\u003c\/th\u003e\n\u003ctd\u003e90–120 minutes at 150°F (60–65°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVacuuming\u003c\/th\u003e\n\u003ctd\u003e~5 minutes; expect temporary rise and collapse of 300–400% during degassing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStorage Life (Unopened)\u003c\/th\u003e\n\u003ctd\u003eAt least 6 months in a cool, dry place\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRubber Type\u003c\/th\u003e\n\u003ctd\u003eNon-silicone RTV (follow specific Castaldo procedures)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCastaldo LiquaCast® Long-Life Part A\u003c\/li\u003e\n\u003cli\u003eCastaldo LiquaCast® Long-Life Part B\u003c\/li\u003e\n\u003cli\u003eTotal net contents: 2.2 lb (1 kg); mix 1:1\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eJewelry and small-parts molds requiring high detail retention, especially thin filigree and fine-channel designs.\u003c\/li\u003e\n\u003cli\u003eMost CAD-CAM printed resins and wax patterns; for certain resins, use a barrier coat and\/or mold release (see Notes).\u003c\/li\u003e\n\u003cli\u003eWorks with vacuum degassing. If no vacuum pump is available, pressure curing in an empty (unheated) wax injector pot is an alternative.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStore finished molds in airtight containers away from heat and light; do not store in contact with molds made from other rubber types.\u003c\/li\u003e\n\u003cli\u003eSome resins may soften or adhere; use a barrier coating (e.g., PVA, spray paint, or Castaldo resin release) and then apply release spray as needed.\u003c\/li\u003e\n\u003cli\u003eAvoid moisture contamination; do not mix in paper cups or with wooden tools.\u003c\/li\u003e\n\u003cli\u003eUse gloves and eye protection; ensure adequate ventilation. See SDS and product labels for full safety guidance.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Castaldo","offers":[{"title":"Default Title","offer_id":43579571798230,"sku":"122.617","price":109.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/castaldo-liquacast-long-life-jewelry-molding-rubber-1-kilo-kit-otto-frei.jpg?v=1719958587"},{"product_id":"castaldo-liquafast-ice-transparent-rtv-silicone-rubber-1kg","title":"Castaldo LiquaFast ICE Transparent No Shrink Liquid Mold Rubber-1 Kilo Kit","description":"\u003cp\u003eLiquaFast® ICE is Castaldo's fastest-curing 0% shrinkage RTV silicone mold rubber, specially designed for CAD-CAM, RP, and SLA models. This transparent two-part system produces strong, tear-resistant molds ready to use in as little as 30 minutes—ideal for rapid prototype workflows and short-run jewelry production. Low viscosity makes it easy to measure, mix, pour, and degas, even without vacuum equipment.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCures in as little as 30 minutes at room temperature.\u003c\/li\u003e\n\u003cli\u003e0% shrinkage for precise pattern reproduction.\u003c\/li\u003e\n\u003cli\u003eTransparent silicone allows visual inspection of masters during pouring and cure.\u003c\/li\u003e\n\u003cli\u003eTough, durable, and tear-resistant molds that do not soften with age.\u003c\/li\u003e\n\u003cli\u003eLow viscosity ensures easy mixing, pouring, and bubble-free results.\u003c\/li\u003e\n\u003cli\u003eCompatible with most CAD-CAM and RP resins, including Solidscape® wax models.\u003c\/li\u003e\n\u003cli\u003eEconomical alternative to traditional RTV materials—faster throughput with less downtime.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal Kit Weight\u003c\/th\u003e\n\u003ctd\u003e1 kg (2.2 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd\u003eTransparent \/ Clear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMix Ratio\u003c\/th\u003e\n\u003ctd\u003e1:1 (Part A : Part B) by weight or volume\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eViscosity\u003c\/th\u003e\n\u003ctd\u003eLow — easy to pour and degas\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePot Life (Working Time)\u003c\/th\u003e\n\u003ctd\u003e15–25 minutes at 77°F (25°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCure Time (Room Temperature)\u003c\/th\u003e\n\u003ctd\u003e60–90 minutes; usable molds in as little as 30 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAccelerated Cure\u003c\/th\u003e\n\u003ctd\u003eApproximately 20–30 minutes at 120°F (50°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShrinkage\u003c\/th\u003e\n\u003ctd\u003e0%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eTwo-part transparent RTV silicone rubber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLiquaFast® ICE Part A (transparent silicone base)\u003c\/li\u003e\n\u003cli\u003eLiquaFast® ICE Part B (transparent silicone catalyst)\u003c\/li\u003e\n\u003cli\u003eTotal net contents: 1 kg (2.2 lb); mix 1:1 by weight or volume\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIdeal for CAD-CAM, RP, and SLA master models, including fine detail and delicate designs.\u003c\/li\u003e\n\u003cli\u003eExcellent with Solidscape® and other wax\/resin-based prototypes.\u003c\/li\u003e\n\u003cli\u003eSuitable for jewelry model making, casting, and prototyping where speed and clarity matter.\u003c\/li\u003e\n\u003cli\u003eCan be used with or without vacuum equipment. If no vacuum is available, brushing or dipping techniques minimize air bubbles (see instruction sheet).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMix thoroughly to a uniform consistency; avoid introducing air during stirring.\u003c\/li\u003e\n\u003cli\u003eMaintain even room temperature for best cure results.\u003c\/li\u003e\n\u003cli\u003eDo not mix in paper or wooden containers; use clean plastic or metal mixing tools.\u003c\/li\u003e\n\u003cli\u003eStore sealed in a cool, dry place away from sunlight.\u003c\/li\u003e\n\u003cli\u003eProfessional use only. Follow Castaldo's full instructions for best results and safety precautions.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Castaldo","offers":[{"title":"Default Title","offer_id":43579572388054,"sku":"122.620","price":132.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/castaldo-liquafast-ice-transparent-no-shrink-liquid-mold-rubber-1-kilo-kit-otto-frei.jpg?v=1719958587"},{"product_id":"castaldo-quick-sil-rtv-silicone-molding-putty-100g","title":"Castaldo Quick-Sil RTV Mold Rubber-100 Gram Kit","description":"\u003cp\u003eCastaldo Quick-Sil® is a two-part room temperature vulcanizing (RTV) silicone molding putty that produces tough, strong, and long-lasting production jewelry molds for lost wax casting with 0% shrinkage. Safe, non-hazardous, and odor-free, Quick-Sil® requires no special equipment — just mix equal parts by hand and cure at room temperature in minutes. Perfect for rapid mold making without a vacuum or vulcanizer.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEasy to use — mix by hand, no vacuum or precise measuring required.\u003c\/li\u003e\n\u003cli\u003eFast setting — working time of 1–2 minutes, cures in approximately 15 minutes.\u003c\/li\u003e\n\u003cli\u003eProduces tough, strong molds with 0% shrinkage for high accuracy.\u003c\/li\u003e\n\u003cli\u003eSafe, non-toxic, non-hazardous; no unpleasant fumes or odors.\u003c\/li\u003e\n\u003cli\u003eWorks best when pressed under pressure (vise, clamps, or unheated mold press).\u003c\/li\u003e\n\u003cli\u003eSuitable for lost wax casting and direct casting of low-temperature metals like lead, tin, or pewter.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eKit Size\u003c\/th\u003e\n\u003ctd\u003e100 grams (Part A + Part B)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eTwo-part RTV silicone putty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMix Ratio\u003c\/th\u003e\n\u003ctd\u003e1:1 by hand (approximate — no precision measuring needed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWorking Time\u003c\/th\u003e\n\u003ctd\u003e1–2 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCure Time\u003c\/th\u003e\n\u003ctd\u003eApprox. 15 minutes at room temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShrinkage\u003c\/th\u003e\n\u003ctd\u003e0%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Molding Pressure\u003c\/th\u003e\n\u003ctd\u003eApply as much pressure as possible using vise, clamps, or unheated mold press\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Temperature\u003c\/th\u003e\n\u003ctd\u003eWarm materials to 70–100°F (20–40°C) for best results\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eApplication \u0026amp; Use\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003eQuickly mix equal parts A and B by hand — do not overmix; a uniform color is not required.\u003c\/li\u003e\n\u003cli\u003eForm the mixture around your model or within a mold frame before the 2-minute working time expires.\u003c\/li\u003e\n\u003cli\u003eClamp or press under pressure to eliminate air bubbles and ensure even curing.\u003c\/li\u003e\n\u003cli\u003eMold cures fully in about 15 minutes and can be used immediately.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eIdeal for jewelry prototypes, wax models, and small metal components.\u003c\/li\u003e\n\u003cli\u003eWorks with low-melting alloys such as tin, pewter, and lead.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDo not overmix; overmixing may cause the compound not to cure properly.\u003c\/li\u003e\n\u003cli\u003eWarm cold material to room temperature before mixing.\u003c\/li\u003e\n\u003cli\u003eCold mold frames may lengthen cure time — warm slightly to 90°F (32°C) before use.\u003c\/li\u003e\n\u003cli\u003eResidue after molding is harmless mineral oil; clean with soap and water.\u003c\/li\u003e\n\u003cli\u003eWash mold frames and tools thoroughly when switching between rubber types to prevent surface contamination.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Castaldo","offers":[{"title":"Default Title","offer_id":43582296850646,"sku":"122.613-100","price":15.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/castaldo-quick-sil-rtv-mold-rubber-100-gram-kit-otto-frei.jpg?v=1719957115"},{"product_id":"castaldo-mold-lock-formers-brass-bag-150","title":"Castaldo Mold Lock Formers-Bags of Approx 150","description":"\u003cp\u003eCastaldo Mold Lock Formers offer a fast, convenient method for creating mold locks without the need for hand-cutting. These stamped brass cones are pressed into uncured mold rubber to form precise registration locks that prevent vulcanized molds from shifting or misaligning during wax injection — a critical step for achieving accurate, consistent castings.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eForms mold locks quickly without manual cutting\u003c\/li\u003e\n\u003cli\u003eStamped brass cone construction for consistent lock geometry\u003c\/li\u003e\n\u003cli\u003ePrevents mold halves from shifting during injection\u003c\/li\u003e\n\u003cli\u003eImproves casting consistency and registration accuracy\u003c\/li\u003e\n\u003cli\u003eConvenient bag packaging for bench use\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\u003eStamped brass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShape\u003c\/th\u003e\n\u003ctd\u003eCone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Bag\u003c\/th\u003e\n\u003ctd\u003eApproximately 150 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eCastaldo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 bag of approximately 150 Castaldo Mold Lock Formers\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Castaldo","offers":[{"title":"Default Title","offer_id":43584075923670,"sku":"122.581","price":24.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/castaldo-mold-lock-formers-bags-of-approx-150-otto-frei.jpg?v=1719956415"},{"product_id":"castaldo-quick-sil-soft-flexible-rtv-silicone-mold-rubber-1kg","title":"Castaldo Quick-Sil Soft \u0026 Flexible Two Part RTV Silicone Putty Mold Rubber-1 Kg (2.2 Lbs.) Kit","description":"\u003cp\u003eCastaldo Quick-Sil Soft \u0026amp; Flexible is a two-part room temperature vulcanizing (RTV) silicone putty that produces tough, strong, long-lasting production jewelry molds for lost wax casting with \u003cstrong\u003e0% shrinkage\u003c\/strong\u003e. This is the newer, softer version of Castaldo's popular Quick-Sil RTV Mold Rubber — softer in relation to the original formula, which is now designated as Firm \u0026amp; Flexible (see part number 122.613).\u003c\/p\u003e\u003cp\u003eSafe, non-hazardous, and non-toxic, Castaldo Quick-Sil Soft \u0026amp; Flexible produces no unpleasant fumes or odors during use. Mixing is straightforward: combine equal parts of Part A and Part B by hand. No precise measuring or vacuum degassing is required to achieve optimum results. No vulcanizing is needed, though best results are obtained when the material is clamped under pressure — such as in a vise or an unheated mold press. Detailed instructions are included with every kit.\u003c\/p\u003e\u003cp\u003eWhile designed primarily for lost wax casting molds, Castaldo Quick-Sil Soft \u0026amp; Flexible can also be used for \u003cstrong\u003edirect casting of low-temperature metals\u003c\/strong\u003e such as lead, tin, and pewter.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eIntended for professional use only by persons familiar with jewelry casting techniques.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTwo-part RTV silicone putty — no heat or vulcanizing required\u003c\/li\u003e\n\u003cli\u003e0% shrinkage for accurate, repeatable production molds\u003c\/li\u003e\n\u003cli\u003eSofter, more flexible formula compared to the original Quick-Sil (Firm \u0026amp; Flexible)\u003c\/li\u003e\n\u003cli\u003eMix equal parts by hand — no precise measurement or vacuum degassing needed\u003c\/li\u003e\n\u003cli\u003eSafe, non-hazardous, and non-toxic with no fumes or odors\u003c\/li\u003e\n\u003cli\u003eSuitable for lost wax casting molds and direct casting of low-temperature metals\u003c\/li\u003e\n\u003cli\u003eBest results achieved when clamped under pressure during cure\u003c\/li\u003e\n\u003cli\u003eIncludes detailed instructions for use\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eTwo-Part RTV Silicone Molding Putty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFormula\u003c\/th\u003e\n\u003ctd\u003eSoft \u0026amp; Flexible (newer version)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMixing Ratio\u003c\/th\u003e\n\u003ctd\u003eEqual parts Part A and Part B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWork Time\u003c\/th\u003e\n\u003ctd\u003e1–2 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCure Time\u003c\/th\u003e\n\u003ctd\u003eApproximately 15 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShrinkage\u003c\/th\u003e\n\u003ctd\u003e0%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKit Weight\u003c\/th\u003e\n\u003ctd\u003e1 kg (2.2 lbs.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHazard Status\u003c\/th\u003e\n\u003ctd\u003eNon-hazardous, non-toxic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUse Level\u003c\/th\u003e\n\u003ctd\u003eProfessional use only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1 kg (2.2 lb.) kit of Castaldo Quick-Sil Soft \u0026amp; Flexible RTV Silicone (Part A and Part B)\u003c\/li\u003e\n\u003cli\u003eDetailed instructions for use\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Castaldo","offers":[{"title":"Default Title","offer_id":43584077725910,"sku":"122.6135SOFT","price":139.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/castaldo-quick-sil-soft-and-flexible-two-part-rtv-silicone-putty-mold-rubber-1-kg-2-2-lbs-kit-otto-frei.jpg?v=1719956414"},{"product_id":"castaldo-liquafast-ice-transparent-rtv-silicone-rubber-4kg-kit","title":"Castaldo LiquaFast ICE Transparent No Shrink Liquid Mold Rubber-4 Kilo Kit","description":"\u003cp\u003eLiquaFast® ICE is Castaldo's ultra-fast-curing, transparent 0% shrinkage RTV silicone mold rubber, developed for rapid production of CAD-CAM, RP, and SLA models. This two-part system forms tough, long-lasting molds ready in as little as 30 minutes — perfect for same-day casting workflows. Its clarity allows visual inspection of models during pouring and curing, while low viscosity ensures bubble-free detail replication.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Hazardous material — ground shipping only. Not eligible for air or international shipment.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSuper-fast cure — ready-to-use molds in as little as 30 minutes.\u003c\/li\u003e\n\u003cli\u003e0% shrinkage for precision-fit wax patterns and accurate castings.\u003c\/li\u003e\n\u003cli\u003eTransparent silicone formula allows direct visual inspection while curing.\u003c\/li\u003e\n\u003cli\u003eExtremely tough and tear-resistant — molds resist softening over time.\u003c\/li\u003e\n\u003cli\u003eLow viscosity simplifies measuring, mixing, and pouring with fewer bubbles.\u003c\/li\u003e\n\u003cli\u003eRecommended vacuum degassing for optimal clarity and mold strength.\u003c\/li\u003e\n\u003cli\u003eEconomical alternative to traditional silicone RTVs — lower cost per mold cycle.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eKit Size\u003c\/th\u003e\n\u003ctd\u003e4 kilograms (8.8 lb total)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eTwo-part transparent RTV silicone rubber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMix Ratio\u003c\/th\u003e\n\u003ctd\u003e1:1 by weight or volume\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eViscosity\u003c\/th\u003e\n\u003ctd\u003eLow — easy to pour and degas\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWorking Time\u003c\/th\u003e\n\u003ctd\u003e15–25 minutes at 77°F (25°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCure Time\u003c\/th\u003e\n\u003ctd\u003e60–90 minutes at room temperature; usable molds in 30 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAccelerated Cure\u003c\/th\u003e\n\u003ctd\u003e20–30 minutes at 120°F (50°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShrinkage\u003c\/th\u003e\n\u003ctd\u003e0%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVacuum Use\u003c\/th\u003e\n\u003ctd\u003eRecommended for best results; improves clarity and eliminates trapped air\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eLiquaFast® ICE Part A (clear base)\u003c\/li\u003e\n\u003cli\u003eLiquaFast® ICE Part B (clear catalyst)\u003c\/li\u003e\n\u003cli\u003eTotal net contents: 4 kilograms (8.8 lb); mix 1:1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOptimized for CAD-CAM, RP, and SLA resin models, including Solidscape® and similar materials.\u003c\/li\u003e\n\u003cli\u003eIdeal for jewelers and model makers requiring fast turnaround and high detail fidelity.\u003c\/li\u003e\n\u003cli\u003eCompatible with most casting waxes and resins. Use a barrier coat for sensitive materials if required.\u003c\/li\u003e\n\u003cli\u003eRecommended for professional jewelry mold making, prototyping, and small-scale production.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFor best results, vacuum-degas after mixing and again after pouring to remove air bubbles.\u003c\/li\u003e\n\u003cli\u003eTo accelerate curing, warm molds gently to 120°F (50°C). Avoid overheating above 150°F (65°C).\u003c\/li\u003e\n\u003cli\u003eIf no vacuum pump is available, brush or dip the model before pouring the full mold to minimize air entrapment.\u003c\/li\u003e\n\u003cli\u003eMaintain even room temperature (above 65°F \/ 18°C) during curing. Avoid temperature fluctuations.\u003c\/li\u003e\n\u003cli\u003eStore unopened containers in a cool, dry place away from sunlight. Shelf life: approximately 6 months.\u003c\/li\u003e\n\u003cli\u003eClassified ORM-D: ground shipping only; not for air or international transport.\u003c\/li\u003e\n\u003cli\u003eUse gloves and eye protection. Work in a well-ventilated area.\u003c\/li\u003e\n\u003cli\u003eRead and follow all Castaldo SDS and label precautions before use.\u003c\/li\u003e\n\u003cli\u003eProfessional use only — designed for experienced casters and mold makers.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Castaldo","offers":[{"title":"Default Title","offer_id":43584078250198,"sku":"122.621-4KG","price":415.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/castaldo-liquafast-ice-transparent-no-shrink-liquid-mold-rubber-4-kilo-kit-otto-frei.jpg?v=1719956415"},{"product_id":"castaldo-white-label-natural-molding-rubber-5lb-roll","title":"Castaldo White Label Natural Jewelry Molding Rubber-5 lb Roll","description":"\u003cp\u003eCastaldo White Label Natural Jewelry Molding Rubber is a professional-grade vulcanizing rubber designed for experienced mold-makers who demand resilience, pliability, and consistent results. Formulated with a high concentration of pure natural gum rubber, White Label is the firmer of the two Castaldo grades — a quality that seasoned professionals rely on to produce high-quality molds efficiently.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Castaldo USA has been sold to a company in the United Kingdom, and all Castaldo products are now manufactured in the UK. Castaldo White Label Natural Molding Rubber is no longer available in strips or ready-cut (pre-cut) form and is now sold exclusively in 5 lb rolls.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHigh concentration of pure natural gum rubber for superior resilience and pliability\u003c\/li\u003e\n\u003cli\u003eFirmer grade — ideal for experienced mold-makers seeking precise control\u003c\/li\u003e\n\u003cli\u003eProduces high-quality molds in the shortest reasonable time\u003c\/li\u003e\n\u003cli\u003eEach sheet is 1\/8\" thick for consistent layering and mold frame filling\u003c\/li\u003e\n\u003cli\u003eNow available exclusively in 5 lb rolls\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\u003e122.595\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack Quantity\u003c\/th\u003e\n\u003ctd\u003e5 lb roll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSheet Thickness\u003c\/th\u003e\n\u003ctd\u003e1\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVulcanizing Temperature\u003c\/th\u003e\n\u003ctd\u003e310°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVulcanizing Time\u003c\/th\u003e\n\u003ctd\u003e15 minutes per 1\/4\" of mold frame thickness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCountry of Manufacture\u003c\/th\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eCastaldo White Label is no longer available in strip or pre-cut form. This product is sold in 5 lb rolls only. All Castaldo products are currently manufactured in the United Kingdom following the sale of Castaldo USA.\u003c\/p\u003e","brand":"Castaldo","offers":[{"title":"Default Title","offer_id":43584823427286,"sku":"122.595","price":61.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/castaldo-white-label-natural-jewelry-molding-rubber-5-lb-roll-otto-frei.jpg?v=1719955905"},{"product_id":"castaldo-gold-label-natural-molding-rubber-5lb-roll","title":"Castaldo Gold Label Natural Jewelry Molding Rubber-5 lb Roll","description":"\u003cp\u003eCastaldo Gold Label Natural Jewelry Molding Rubber is the premium choice for experienced mold-makers tackling complex, detail-demanding work. Formulated with even more pure natural gum rubber than Castaldo White Label, Gold Label delivers exceptional softness and pliability — qualities that make it indispensable when working with difficult molds that contain undercuts. A stiffer compound in these situations risks breaking delicate wax patterns or making their production impossible. Gold Label's superior flexibility helps protect intricate wax patterns and can significantly reduce labor costs over time.\u003c\/p\u003e\u003cp\u003ePlease note: Castaldo USA has been acquired by a company in the United Kingdom, and all Castaldo products are now manufactured in the UK. Castaldo Gold Label Natural Mold Rubber is no longer available in strips or pre-cut form — it is available exclusively in 5 lb rolls.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHigher concentration of pure natural gum rubber than Castaldo White Label\u003c\/li\u003e\n\u003cli\u003eExceptionally soft and pliable — ideal for molds with undercuts\u003c\/li\u003e\n\u003cli\u003eHelps prevent breakage of delicate wax patterns during demolding\u003c\/li\u003e\n\u003cli\u003eReduces labor costs on difficult or complex mold work\u003c\/li\u003e\n\u003cli\u003eAvailable exclusively in 5 lb roll format\u003c\/li\u003e\n\u003cli\u003eNow manufactured in the United Kingdom\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e5 lb roll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVulcanizing Temperature\u003c\/th\u003e\n\u003ctd\u003e310°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVulcanizing Time\u003c\/th\u003e\n\u003ctd\u003e15 minutes per 1\/4\" of mold frame thickness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompound Base\u003c\/th\u003e\n\u003ctd\u003eNatural gum rubber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCountry of Manufacture\u003c\/th\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCastaldo Gold Label is no longer available in strip or pre-cut formats — 5 lb rolls only.\u003c\/li\u003e\n\u003cli\u003eCastaldo products are now manufactured in the United Kingdom following the acquisition of Castaldo USA.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Castaldo","offers":[{"title":"Default Title","offer_id":43584824934614,"sku":"122.596","price":63.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/castaldo-gold-label-natural-jewelry-molding-rubber-5-lb-roll-otto-frei.jpg?v=1719955905"},{"product_id":"castaldo-see-through-mold-frames-lmr-rtv","title":"Castaldo Mold Frames","description":"\u003cp\u003eCastaldo see-through mold frames are designed for use with Castaldo Liquid Mold Rubber, Castaldo Quick-Sil RTV molding rubber, and other brands of Liquid Mold Rubber (LMR) or RTV. These frames produce molds measuring \u003cstrong\u003e1-7\/8\" × 5-1\/2\"\u003c\/strong\u003e and are available in three thickness options to suit a range of casting applications.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSee-through construction for easy monitoring during the molding process\u003c\/li\u003e\n\u003cli\u003eCompatible with Castaldo Liquid Mold Rubber and Quick-Sil RTV\u003c\/li\u003e\n\u003cli\u003eWorks with other brands of LMR and RTV molding rubber\u003c\/li\u003e\n\u003cli\u003eAvailable in three thickness options: 3\/4\", 1\", and 1-1\/2\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMold Dimensions\u003c\/th\u003e\n\u003ctd\u003e1-7\/8\" × 5-1\/2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Materials\u003c\/th\u003e\n\u003ctd\u003eLiquid Mold Rubber (LMR), RTV molding rubber\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\u003eThickness\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e122.636\u003c\/td\u003e\n\u003ctd\u003e3\/4\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e122.637\u003c\/td\u003e\n\u003ctd\u003e1\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e122.639\u003c\/td\u003e\n\u003ctd\u003e1-1\/2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Castaldo","offers":[{"title":"3\/4\"","offer_id":43692825903318,"sku":"122.636","price":32.0,"currency_code":"USD","in_stock":true},{"title":"1\"","offer_id":43692825968854,"sku":"122.637","price":32.0,"currency_code":"USD","in_stock":true},{"title":"1-1\/2\"","offer_id":43692826001622,"sku":"122.639","price":34.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/castaldo-mold-frames-otto-frei.jpg?v=1719955515"},{"product_id":"castaldo-golden-river-wax-flow-enhancer-4-4lb","title":"Closeout Golden River Wax Flow Enhancer 4.4Lbs","description":"\u003cp\u003eGolden River is a high-fluidity injection wax designed to improve the flow characteristics of most standard jewelry injection waxes. When added in small amounts to your wax pot, it increases fluidity so wax flows more easily into intricate or hard-to-fill rubber molds. The result is smoother injection and more complete pattern fill—especially where detail and thin sections demand better flow.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-fluidity injection wax used to improve flow of standard jewelry waxes\u003c\/li\u003e\n\u003cli\u003eHelps fill intricate and hard-to-inject rubber molds\u003c\/li\u003e\n\u003cli\u003eEasy adjustment—add a handful or two to increase fluidity\u003c\/li\u003e\n\u003cli\u003eCan be blended back to standard consistency by adding regular injection wax\u003c\/li\u003e\n\u003cli\u003eBurns out cleanly without residue or ash\u003c\/li\u003e\n\u003cli\u003eSafe for use with rubber molds\u003c\/li\u003e\n\u003cli\u003eIn use for over fifty years in professional casting environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eInjection Wax\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNet Weight\u003c\/th\u003e\n\u003ctd\u003e4.4 lbs (2 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManufactured In\u003c\/th\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eCastaldo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGolden River is an injection wax itself and can be used to modify the flow properties of most standard jewelry injection waxes.\u003c\/li\u003e\n\u003cli\u003eAdd gradually to achieve desired fluidity; adjust back by blending in regular injection wax.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Castaldo","offers":[{"title":"Default Title","offer_id":43844769087702,"sku":"122.300","price":85.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/closeout-golden-river-wax-flow-enhancer-4-4lbs-otto-frei.jpg?v=1719954420"},{"product_id":"castaldo-white-label-molding-rubber-5lb-strips-precuts","title":"Castaldo White Label Jewelry Molding Rubber-Ready Cut \u0026 Strips-5 Lb Boxes","description":"\u003cp\u003e\u003cstrong\u003eCastaldo White Label Jewelry Molding Rubber\u003c\/strong\u003e is a firm, high-quality vulcanizing rubber with a high concentration of pure natural gum rubber. Firmer than Castaldo Gold Label, White Label delivers the resilience and pliability that experienced mold-makers rely on to produce consistent, high-quality molds efficiently. Available in two convenient forms — Strips or Ready-Cut (Pre-Cut) — both sold in 5 lb. boxes.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh concentration of pure natural gum rubber for superior resilience and pliability\u003c\/li\u003e\n\u003cli\u003eFirmer formulation than Castaldo Gold Label — ideal for experienced mold-makers\u003c\/li\u003e\n\u003cli\u003eAvailable as long Strips or Ready-Cut pieces to fit popular industry mold frames\u003c\/li\u003e\n\u003cli\u003eReady-Cut pieces feature rounded edges for easy layering and placement\u003c\/li\u003e\n\u003cli\u003eRubber thickness is 1\/8\" throughout both formats\u003c\/li\u003e\n\u003cli\u003eSold in 5 lb. boxes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eRubber Thickness\u003c\/th\u003e\n\u003ctd\u003e1\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVulcanizing Temperature\u003c\/th\u003e\n\u003ctd\u003e310°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVulcanizing Time\u003c\/th\u003e\n\u003ctd\u003e15 minutes per 1\/4\" of mold frame thickness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold By\u003c\/th\u003e\n\u003ctd\u003e5 lb. box\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\u003eFormat\u003c\/th\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e122.583\u003c\/td\u003e\n\u003ctd\u003eStrips\u003c\/td\u003e\n\u003ctd\u003e2-7\/8\" wide × 18\" long × 1\/8\" thick\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e122.585\u003c\/td\u003e\n\u003ctd\u003eReady-Cut (Pre-Cut)\u003c\/td\u003e\n\u003ctd\u003e1-7\/8\" × 2-7\/8\" × 1\/8\" thick, rounded edges\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Castaldo","offers":[{"title":"Strips 2-7\/8\" x 18\" x 1\/8\"","offer_id":47551865618646,"sku":"122.583","price":61.0,"currency_code":"USD","in_stock":true},{"title":"Pre-cuts 1-7\/8\" x 2-7\/8\" x 1\/8\"","offer_id":47551865651414,"sku":"122.585","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/castaldo-white-label-jewelry-molding-rubber-ready-cut-and-strips-5-lb-boxes-otto-frei.jpg?v=1726697700"},{"product_id":"castaldo-gold-label-natural-jewelry-molding-rubber-5lb","title":"Castaldo Gold Label Jewelry Molding Rubber-Ready Cut \u0026 Strips-5 Lb Boxes","description":"\u003cp\u003eCastaldo\u003csup\u003e®\u003c\/sup\u003e Gold Label\u003csup\u003e®\u003c\/sup\u003e jewelry molding rubber contains even more pure natural gum rubber than Castaldo White Label, making it exceptionally soft and pliable. Experienced mold-makers rely on this compound's superior flexibility for difficult molds with undercuts, where a stiffer rubber would break delicate wax patterns or make production impossible. The added pliability can translate directly into reduced labor costs on challenging pieces.\u003c\/p\u003e\u003cp\u003eAvailable in 5 lb boxes in your choice of Strips or Ready Cut (Pre-Cut) format to suit your workflow.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHigher natural gum rubber content than Castaldo White Label for superior softness and pliability\u003c\/li\u003e\n\u003cli\u003eIdeal for complex molds with undercuts that would stress or break wax patterns with stiffer rubber\u003c\/li\u003e\n\u003cli\u003eRubber is 1\/8\" thick throughout\u003c\/li\u003e\n\u003cli\u003eStrips format: 2-7\/8\" wide × 18\" long — cut to your needed length\u003c\/li\u003e\n\u003cli\u003eReady Cut (Pre-Cut) format: 1-7\/8\" × 2-7\/8\" with rounded edges, sized to fit popular industry-standard mold frames\u003c\/li\u003e\n\u003cli\u003eVulcanize at 310°F for 15 minutes per 1\/4\" of mold frame thickness\u003c\/li\u003e\n\u003cli\u003eSold in 5 lb boxes\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eRubber Thickness\u003c\/th\u003e\n\u003ctd\u003e1\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBox Weight\u003c\/th\u003e\n\u003ctd\u003e5 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVulcanizing Temperature\u003c\/th\u003e\n\u003ctd\u003e310°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVulcanizing Time\u003c\/th\u003e\n\u003ctd\u003e15 minutes per 1\/4\" of mold frame thickness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompound Type\u003c\/th\u003e\n\u003ctd\u003eNatural gum rubber\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\u003eFormat\u003c\/th\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e122.584\u003c\/td\u003e\n\u003ctd\u003eStrips\u003c\/td\u003e\n\u003ctd\u003e2-7\/8\" × 18\" × 1\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e122.586\u003c\/td\u003e\n\u003ctd\u003eReady Cut (Pre-Cut)\u003c\/td\u003e\n\u003ctd\u003e1-7\/8\" × 2-7\/8\" × 1\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Castaldo","offers":[{"title":"Strips 2-7\/8\" x 18\" x 1\/8\"","offer_id":47551866601686,"sku":"122.584","price":63.0,"currency_code":"USD","in_stock":true},{"title":"Pre-cuts 1-7\/8\" x 2-7\/8\" x 1\/8\"","offer_id":47551866634454,"sku":"122.586","price":68.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/castaldo-gold-label-jewelry-molding-rubber-ready-cut-and-strips-5-lb-boxes-otto-frei.jpg?v=1726697702"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/collections\/castaldo-logo.png?v=1758211919","url":"https:\/\/www.ottofrei.com\/ja\/collections\/castaldo-mold-rubber-jewelry-casting.oembed","provider":"Otto Frei","version":"1.0","type":"link"}