{"product_id":"used-durston-1312-quad-jump-ringer","title":"Used Open-Box Durston 1312 Quad Jump Ringer","description":"\u003cp\u003eThe Durston 1312 Quad Jump Ringer is a professional jump ring making machine designed for jewelers and metalsmiths who need to mass produce jump rings efficiently. Compatible with a Foredom No. 30 style handpiece and flex shaft machine, this system lets you produce jump rings from soft, non-ferrous jewelry wire including gold, copper, and silver.\u003c\/p\u003e\u003cp\u003eWire as thick as 13 gauge (1.85 mm) can be used, and the inside diameter of finished rings ranges from 2.5 mm to 12 mm. Outside diameter will vary based on wire diameter. The most commonly used wire gauge in the jewelry industry for jump ring production is 0.8 mm – 1.0 mm.\u003c\/p\u003e\u003cp\u003eThe Quad Jump Ringer differs from the Durston Complete Jump Ringer in several key ways. It does not include a stand and instead uses a simple vise or bench-mounted hand coiler, making it a more economical option. It includes the same 20 mandrels and uses the same handpiece holder and high speed steel saw blade. A notable feature is the \u003cstrong\u003eQuad Coil Holder\u003c\/strong\u003e — a 4-sided design that provides more precise angles for holding specific jump ring sizes.\u003c\/p\u003e\u003cp\u003eThe included mandrel set ranges from 2.5 mm (smallest) to 12 mm (largest) in 1\/2 mm increments. Note that the three smallest mandrels — 2.5 mm, 3 mm, and 4 mm — are \u003cem\u003enot\u003c\/em\u003e drilled with holes. All other mandrels in the set are drilled with holes.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe Durston Quad Jump Ringer requires a Foredom No. 30 type handpiece and flex shaft machine. Flex shaft and handpiece are sold separately.\u003c\/strong\u003e\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMass produces jump rings from soft, non-ferrous wire (gold, copper, silver)\u003c\/li\u003e\n\u003cli\u003eAccepts wire up to 13 gauge (1.85 mm) thick\u003c\/li\u003e\n\u003cli\u003eJump ring inside diameter range: 2.5 mm – 12 mm\u003c\/li\u003e\n\u003cli\u003e4-sided Quad Coil Holder for precise angle control\u003c\/li\u003e\n\u003cli\u003eIncludes 20 mandrels from 2.5 mm to 12 mm in 1\/2 mm increments\u003c\/li\u003e\n\u003cli\u003eMandrels 2.5 mm, 3 mm, and 4 mm are not drilled; all others are drilled with holes\u003c\/li\u003e\n\u003cli\u003eCompatible with Foredom No. 30 style handpiece and flex shaft machine\u003c\/li\u003e\n\u003cli\u003eMore economical alternative to the Durston Complete Jump Ringer\u003c\/li\u003e\n\u003cli\u003eUsed open-box condition; inspected prior to sale\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eWire Capacity\u003c\/th\u003e\n\u003ctd\u003eUp to 13 gauge (1.85 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eJump Ring ID Range\u003c\/th\u003e\n\u003ctd\u003e2.5 mm – 12 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMandrel Count\u003c\/th\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMandrel Increment\u003c\/th\u003e\n\u003ctd\u003e1\/2 mm steps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSaw Blade Size\u003c\/th\u003e\n\u003ctd\u003e1-1\/4 in. High Speed Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Handpiece\u003c\/th\u003e\n\u003ctd\u003eForedom No. 30 style (sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Wire Types\u003c\/th\u003e\n\u003ctd\u003eSoft, non-ferrous (gold, copper, silver)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIncompatible Wire Types\u003c\/th\u003e\n\u003ctd\u003ePlatinum, titanium, steel, niobium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCondition\u003c\/th\u003e\n\u003ctd\u003eUsed, Open-Box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDurston 4-Sided Quad Coil Holder\u003c\/li\u003e\n\u003cli\u003e1-1\/4 in. High Speed Steel Saw Blade\u003c\/li\u003e\n\u003cli\u003eSaw Blade Mandrel\u003c\/li\u003e\n\u003cli\u003eDurston Handpiece Holder\u003c\/li\u003e\n\u003cli\u003eCoil Winder with Keyless Chuck\u003c\/li\u003e\n\u003cli\u003eSet of 20 mandrels (2.5 mm – 12 mm in 1\/2 mm increments)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eThis is a used open-box item. It may show minor cosmetic wear from handling or inspection but is fully functional. Original packaging, just opened and retaped.\u003c\/li\u003e\n\u003cli\u003eFlex shaft machine and Foredom No. 30 type handpiece are \u003cstrong\u003esold separately\u003c\/strong\u003e and are required for operation.\u003c\/li\u003e\n\u003cli\u003eNot for use with platinum, titanium, steel, or niobium wire.\u003c\/li\u003e\n\u003cli\u003eMandrels sized 2.5 mm, 3 mm, and 4 mm are not drilled with holes; all larger mandrels are drilled.\u003c\/li\u003e\n\u003cli\u003eDoes not include a stand — mounts via a bench vise or bench-mounted hand coiler.\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Durston","offers":[{"title":"Default Title","offer_id":48195721068758,"sku":"999.143202","price":290.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/999.143202_thumb_5f1dcd5b-a824-497d-817b-77d35fe5f42f.jpg?v=1778020150","url":"https:\/\/www.ottofrei.com\/de\/products\/used-durston-1312-quad-jump-ringer","provider":"Otto Frei","version":"1.0","type":"link"}