{"product_id":"busch-carbide-circular-cutters-2-3mm-231f-231fl-231fxl-pave-setting","title":"Busch Fig. 231F\/231FL\/231FXL 2.3 mm x 0.20, 0.30 \u0026 0.40mm Carbide Circular Cutters","description":"\u003cp\u003eBusch Fig. 231F, 231FL, and 231FXL carbide circular cutters are precision tools designed for the second step of pavé setting in hard metals. After drilling starter holes with a carbide twist drill, these circular cutters enlarge each hole to create a secure seat for the rondiste of the stone being set. The smallest 0.40 mm diameter is especially suited for cutting in tight corner areas and fine refinishing work.\u003c\/p\u003e\n\n\u003cp\u003eCarbide burs offer the longest service life of any burs carried by Otto Frei, outlasting both tungsten vanadium and high-speed steel burs. They perform on the most demanding metals — including platinum, titanium, and steel — while also delivering exceptional longevity on standard gold alloys. Manufactured in Germany using advanced production techniques, these burs feature a powerful blade geometry typically reserved for steel tooling. Sold individually.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for the second step of pavé setting in hard metals\u003c\/li\u003e\n\u003cli\u003eEnlarges starter holes to seat the rondiste of the gem securely\u003c\/li\u003e\n\u003cli\u003e0.40 mm diameter suited for tight corner access and fine refinishing\u003c\/li\u003e\n\u003cli\u003eCarbide construction for maximum durability and extended service life\u003c\/li\u003e\n\u003cli\u003eOutperforms tungsten vanadium and high-speed steel burs in longevity\u003c\/li\u003e\n\u003cli\u003eSuitable for platinum, titanium, steel, and all gold alloys\u003c\/li\u003e\n\u003cli\u003ePowerful blade geometry manufactured to precision standards in Germany\u003c\/li\u003e\n\u003cli\u003eSold individually\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eShank Diameter\u003c\/th\u003e\n\u003ctd\u003e3\/32\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank Size\u003c\/th\u003e\n\u003ctd\u003e3\/32\" (standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHead Diameter\u003c\/th\u003e\n\u003ctd\u003e2.3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Speed\u003c\/th\u003e\n\u003ctd\u003e2,000–10,000 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eCarbide\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCountry of Origin\u003c\/th\u003e\n\u003ctd\u003eGermany\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold As\u003c\/th\u003e\n\u003ctd\u003eIndividual piece\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\u003eFigure\u003c\/th\u003e\n\u003cth\u003eCutting Width\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.231\u003c\/td\u003e\n\u003ctd\u003eFig. 231F\u003c\/td\u003e\n\u003ctd\u003e0.20 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.232\u003c\/td\u003e\n\u003ctd\u003eFig. 231FL\u003c\/td\u003e\n\u003ctd\u003e0.30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.233\u003c\/td\u003e\n\u003ctd\u003eFig. 231FXL\u003c\/td\u003e\n\u003ctd\u003e0.40 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cp\u003eThese circular cutters are included in the Busch Carbide Pavé Setting Bur Kit \u003cstrong\u003eBC118.170\u003c\/strong\u003e. For best results in a complete pavé setting workflow, use in conjunction with the Carbide Twist Drill (Fig. 4205S) for starter holes and the Carbide Round Bur (Fig. 1AU) for initial hole enlargement prior to using these circular cutters.\u003c\/p\u003e","brand":"Busch Burs","offers":[{"title":"0.20mm","offer_id":47551729041622,"sku":"BAU118.231","price":23.6,"currency_code":"USD","in_stock":true},{"title":"0.30mm","offer_id":47551729074390,"sku":"BAU118.232","price":23.6,"currency_code":"USD","in_stock":true},{"title":"0.40mm","offer_id":47551729107158,"sku":"BAU118.233","price":23.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-231f231fl231fxl-2-3-mm-x-0-20-0-30-and-0-40mm-carbide-circular-cutters-otto-frei.jpg?v=1719955362","url":"https:\/\/www.ottofrei.com\/products\/busch-carbide-circular-cutters-2-3mm-231f-231fl-231fxl-pave-setting","provider":"Otto Frei","version":"1.0","type":"link"}