{"product_id":"badeco-222-heavy-spring-hammer-handpiece-duplex-spring-134751","title":"Badeco Swiss Hammer Handpiece-222 Heavy Spring Strength-with Duplex Spring","description":"\u003cp\u003eA reciprocating hammer handpiece drives a tip in a fast, adjustable stroke so a stonesetter can raise beads, tighten bezels and bright cut without swinging a hammer by hand. The \u003cstrong\u003eBadeco 222 Heavy Spring Strength Hammer Handpiece with USA Duplex Spring\u003c\/strong\u003e (Part #134.751) is the Swiss-made Badeco 222 fitted with an American-made duplex spring attachment for added flexibility in tight or angled working positions.\u003c\/p\u003e\u003cp\u003eBadeco hammer handpieces are recognized as the highest-quality reciprocating hammer handpieces available. Jewelers prize them for their easily adjustable stroke, controllable power and long service life. The Model 222 heavy spring strength is the most popular spring strength sold worldwide and is the preferred choice among professional stonesetters.\u003c\/p\u003e\u003cp\u003eThe handpiece ships with a Badeco 134.753 (Badeco 240.000) non-hardened tip, meant to be shaped and hardened by the user for their own setting work. A wide variety of pre-shaped and hardened tips is available separately.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSwiss-made Badeco build quality, recognized worldwide for hammer handpieces\u003c\/li\u003e\n\u003cli\u003eHeavy spring strength (Model 222), the most popular spring strength sold worldwide\u003c\/li\u003e\n\u003cli\u003eUSA-made duplex spring attachment for added working flexibility\u003c\/li\u003e\n\u003cli\u003eEasily adjustable stroke for precise control\u003c\/li\u003e\n\u003cli\u003eControllable reciprocating power with a long service life\u003c\/li\u003e\n\u003cli\u003eIncludes a Badeco 134.753 non-hardened tip ready for user shaping and hardening\u003c\/li\u003e\n\u003cli\u003eOne year Badeco factory warranty on the handpiece, duplex spring excluded\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOtto Frei recommends pairing this duplex spring model with a Low Speed High Torque Foredom LX motor (item 134.159) to extend duplex spring life. The foot pedal controls speed, not power.\u003c\/li\u003e\n\u003cli\u003eDo not operate above 5,000 RPM. Duplex springs can be damaged at higher speeds.\u003c\/li\u003e\n\u003cli\u003eReplacement inner duplex springs are available separately: single, Part #134.279 (Foredom HP76); pack of 12, Part #134.280 (Foredom HP76B).\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eTip preparation\u003c\/strong\u003e\u003c\/p\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape\u003c\/strong\u003e the tip as desired before hardening.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep 1, hardening:\u003c\/strong\u003e hold the tip at the threaded part with tweezers without damaging the thread. Heat the front part with a blowlamp to 820°C (light cherry-red). Cool rapidly by placing the tip head-down into an oil bath.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep 2, remove oil:\u003c\/strong\u003e whiten with fine sandpaper. Do not touch the point with bare fingers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep 3, tempering:\u003c\/strong\u003e pass the piece from back to front over a blowlamp to 130°C, and the color must not change. Cool immediately in an oil bath. If the temperature runs too high the tip loses its edge quickly, so repeat from Step 1.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003e\u003cstrong\u003eDuplex spring and warranty\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDo not exceed a 45-degree angle when using the duplex spring. Working past that angle, or bending the spring while detaching the handpiece from the flex shaft, can easily damage it.\u003c\/li\u003e\n\u003cli\u003eThe duplex spring is not made by Badeco and carries no factory warranty. All parts related to the USA duplex spring connection are excluded from warranty as well.\u003c\/li\u003e\n\u003cli\u003eConsider stocking spare inner duplex springs and learning to replace them, since the inner spring is the component that most commonly fails.\u003c\/li\u003e\n\u003cli\u003eHandpieces dismantled by the user during the warranty period are repaired at the user's expense. Damage from improper use or from ignoring Badeco instructions is not covered.\u003c\/li\u003e\n\u003cli\u003eOtto Frei offers in-house repair services for Badeco hammer handpieces.\u003c\/li\u003e\n\u003cli\u003eAn owner's instruction sheet is included with every Badeco hammer handpiece. Read it carefully before use.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Badeco","offers":[{"title":"Default Title","offer_id":43583129780438,"sku":"134.751","price":432.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/badeco-swiss-hammer-handpiece-222-heavy-spring-strength-with-duplex-spring-otto-frei.jpg?v=1719956743","url":"https:\/\/www.ottofrei.com\/ja\/products\/badeco-222-heavy-spring-hammer-handpiece-duplex-spring-134751","provider":"Otto Frei","version":"1.0","type":"link"}