{"product_id":"busch-carbide-cone-bur","title":"Busch® Carbide Cone Bur","description":"\u003cp dir=\"ltr\" data-path-to-node=\"1\"\u003eShape acute setting corners, level tight bearing floors, and mill refractory alloys without tool deflection, rapid dulling, or flute chatter. The Busch® 38AU Series Carbide Cone Bur (Konischer Fräser) is an industrial-grade rotary milling instrument engineered specifically for master goldsmiths, diamond setters, horologists, and precision metal fabricators.\u003c\/p\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"2\"\u003eBelonging to the specialized HighTech-TOOL series, Figure 38AU is manufactured from hot isostatically compressed (HIP) finest-grain tungsten carbide, providing maximum density and uniform structural integrity. Featuring a tapered conical head with a precision end-cutting flat face, this geometry combines lateral side clearance with controlled bottom-leveling capability. While conventional tool steel burs dull quickly in abrasive or work-hardened metals, the 38AU cuts aggressively through jewelry steel, platinum, titanium, white gold, and hard non-ferrous alloys without loss of dimensional accuracy. Its cross-cut helical fluting breaks metal shavings into fine particles, preventing tooth clogging and surface galling. Finished with a signature gold identification ring and an industry-standard 2.35 mm (3\/32\") shank, the series mounts directly into jeweler flex shaft handpieces, precision micromotors, and quick-change bench systems. Available in 6 micro diameters from 0.50 mm to 1.00 mm (38AU-005 to 38AU-010), \u003cspan\u003esupplied as a single-piece package (1 pc\/pack).\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\" data-path-to-node=\"4\"\u003eWhy Choose Busch® Carbide Cone Burs 38AU\u003c\/h3\u003e\n\u003cul dir=\"ltr\" data-path-to-node=\"5\"\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5,0,0\"\u003e\u003cb data-path-to-node=\"5,0,0\" data-index-in-node=\"0\"\u003eHot Isostatically Compressed Carbide:\u003c\/b\u003e HIP treatment eliminates microscopic voids in the material matrix, providing high edge strength and thermal shock resistance under heavy bench loads.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5,1,0\"\u003e\u003cb data-path-to-node=\"5,1,0\" data-index-in-node=\"0\"\u003eTapered Body with Flat End-Cutting Face:\u003c\/b\u003e Slender conical taper (taper angles from 3.80° to 4.90°) provides line-of-sight in restricted setting zones while the flat end face levels bearing seats.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5,2,0\"\u003e\u003cb data-path-to-node=\"5,2,0\" data-index-in-node=\"0\"\u003eCross-Cut Helical Fluting:\u003c\/b\u003e Engineered multi-flute architecture breaks continuous chips into small fragments, preventing metal smear and tool loading in gummy white gold and platinum.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5,3,0\"\u003e\u003cb data-path-to-node=\"5,3,0\" data-index-in-node=\"0\"\u003eEngineered for Difficult Alloys:\u003c\/b\u003e Cuts cleanly through jewelry steel, platinum, titanium, 18K\/14K white gold, yellow gold, and silver.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5,4,0\"\u003e\u003cb data-path-to-node=\"5,4,0\" data-index-in-node=\"0\"\u003eHighTech-TOOL Gold Ring ID:\u003c\/b\u003e Features the signature gold ring band on the neck for rapid bench identification.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5,5,0\"\u003e\u003cb data-path-to-node=\"5,5,0\" data-index-in-node=\"0\"\u003eLow-Vibration Concentric Operation:\u003c\/b\u003e Precision-ground German construction minimizes radial runout, eliminating tool bounce and chatter marks under high microscope magnification.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5,6,0\"\u003e\u003cb data-path-to-node=\"5,6,0\" data-index-in-node=\"0\"\u003eUniversal 2.35 mm (3\/32\") Shank:\u003c\/b\u003e Provides seamless compatibility across standard flexible shafts, bench micromotors, and quick-change handpieces.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 dir=\"ltr\" data-path-to-node=\"10\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable data-path-to-node=\"11\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eParameter Metric\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCertified Factory Specification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"11,1,0,0\"\u003eBrand\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"11,1,1,0\"\u003eBusch®\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"11,2,0,0\"\u003eProduct Model Number\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"11,2,1,0\"\u003eSeries 38AU Cone Bur (Konischer Fräser)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"11,3,0,0\"\u003eHead Material\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"11,3,1,0\"\u003eHot Isostatically Compressed Finest-Grain Carbide\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"11,4,0,0\"\u003eShank Diameter\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"11,4,1,0\"\u003eStandard 2.35 mm (3\/32 in) Reinforced Shank\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"11,5,0,0\"\u003eBur Head Profile\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"11,5,1,0\"\u003eTapered Cone with Flat End Face (Cone Squared)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"11,6,0,0\"\u003eFlute Architecture\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"11,6,1,0\"\u003eCross-Cut Helical Flutes with End-Cutting Face Teeth\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"11,7,0,0\"\u003eAvailable Diameters (D1 \/ D)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"11,7,1,0\"\u003e0.50 mm to 1.00 mm (6 Calibrated Micro Sizes)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"11,8,0,0\"\u003eWorking Length (L1 \/ L)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"11,8,1,0\"\u003e3.00 mm to 4.00 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"11,9,0,0\"\u003eTaper Angle (\u003cspan class=\"math-inline\" data-math=\"\\alpha\" data-index-in-node=\"13\"\u003ea\u003c\/span\u003e)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"11,9,1,0\"\u003e3.80° to 4.90°\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"11,10,0,0\"\u003eRecommended Speed Range\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"11,10,1,0\"\u003e5,000 – 10,000 RPM\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Busch","offers":[{"title":"38AU-005","offer_id":68058396557412,"sku":"BDGB2034","price":16.12,"currency_code":"USD","in_stock":true},{"title":"38AU-006","offer_id":68058396590180,"sku":"BDGB2035","price":16.12,"currency_code":"USD","in_stock":true},{"title":"38AU-007","offer_id":68059924463716,"sku":"BDGB2036","price":16.12,"currency_code":"USD","in_stock":true},{"title":"38AU-008","offer_id":68059924496484,"sku":"BDGB2037","price":16.12,"currency_code":"USD","in_stock":true},{"title":"38AU-009","offer_id":68059924529252,"sku":"BDGB2038","price":16.12,"currency_code":"USD","in_stock":true},{"title":"38AU-010","offer_id":68059924562020,"sku":"BDGB2039","price":16.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0747\/2902\/9732\/files\/busch-carbide-cone-bur-38au-full-profile.jpg?v=1794212421","url":"https:\/\/luxgoldtools.com\/products\/busch-carbide-cone-bur","provider":"LUXGOLDTOOLS","version":"1.0","type":"link"}