{"product_id":"20mm-5pcs-flat-end-cylindrical-sintered-diamond-bur-6mm-shank","title":"20mm Cylinder Sintered Diamond Drill Bit – 5pcs for Stone, Glass \u0026 Ceramic","description":"\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noreferrer\" href=\"https:\/\/lapidarygrinder.com\/collections\/sintered-diamond-laps\" target=\"_blank\"\u003eSintered Diamond Bur\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eis a heavy-duty precision tool engineered for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ehigh-speed grinding\u003c\/strong\u003e,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eshaping\u003c\/strong\u003e, and\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ematerial removal\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eon ultra-hard substrates like\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noreferrer\" href=\"https:\/\/lapidarygrinder.com\/collections\/diamond-abrasives\" target=\"_blank\"\u003ecarbides\u003c\/a\u003e,\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noreferrer\" href=\"https:\/\/lapidarygrinder.com\/collections\/diamond-flat-lap-disc\" target=\"_blank\"\u003eindustrial ceramics\u003c\/a\u003e,\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noreferrer\" href=\"https:\/\/lapidarygrinder.com\/collections\/diamond-saw-blades\" target=\"_blank\"\u003esapphire\u003c\/a\u003e, and\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noreferrer\" href=\"https:\/\/lapidarygrinder.com\/\" target=\"_blank\"\u003eadvanced composites\u003c\/a\u003e. Featuring a sintered metal bond that permanently bonds\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noreferrer\" href=\"https:\/\/lapidarygrinder.com\/collections\/diamond-abrasives\" target=\"_blank\"\u003ediamond particles\u003c\/a\u003e, it delivers unmatched durability and stability under extreme mechanical stress.Sintered Diamond Drill Bit is a high-performance tool engineered for precision drilling in hard materials such as stone, glass, ceramics, and gemstones. Its unique double bevel design enhances both centering and cutting efficiency, making it ideal for clean and accurate hole-making in lapidary and industrial applications.\u003cstrong\u003e6mm Shaft Diamond Grit:46Grit\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAerospace \u0026amp; Defense\u003c\/strong\u003e: Machining\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noreferrer\" href=\"https:\/\/lapidarygrinder.com\/collections\/diamond-abrasives\" target=\"_blank\"\u003etungsten carbide\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ecomponents or\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noreferrer\" href=\"https:\/\/lapidarygrinder.com\/collections\/diamond-flat-lap-disc\" target=\"_blank\"\u003eceramic armor\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTool \u0026amp; Die Making\u003c\/strong\u003e: Sharpening\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noreferrer\" href=\"https:\/\/lapidarygrinder.com\/collections\/diamond-saw-blades\" target=\"_blank\"\u003eindustrial-grade cutting tools\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eor\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noreferrer\" href=\"https:\/\/lapidarygrinder.com\/collections\/metal-backing-plate\" target=\"_blank\"\u003emold cores\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eElectronics Manufacturing\u003c\/strong\u003e: Precision shaping of\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noreferrer\" href=\"https:\/\/lapidarygrinder.com\/collections\/diamond-saw-blades\" target=\"_blank\"\u003esemiconductor substrates\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eor\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noreferrer\" href=\"https:\/\/lapidarygrinder.com\/collections\/faceting-polishing-lap\" target=\"_blank\"\u003eoptical fibers\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLapidary \u0026amp; Jewelry\u003c\/strong\u003e: Detailing\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noreferrer\" href=\"https:\/\/lapidarygrinder.com\/collections\/faceting-polishing-lap\" target=\"_blank\"\u003esynthetic gemstones\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eor\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noreferrer\" href=\"https:\/\/lapidarygrinder.com\/collections\/metal-backing-plate\" target=\"_blank\"\u003ehardened alloys\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eTechnical Considerations\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMaterial Suitability\u003c\/strong\u003e: Optimized for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eMohs 10\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ematerials (e.g.,\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noreferrer\" href=\"https:\/\/lapidarygrinder.com\/collections\/diamond-abrasives\" target=\"_blank\"\u003ediamond\u003c\/a\u003e,\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noreferrer\" href=\"https:\/\/lapidarygrinder.com\/\" target=\"_blank\"\u003ecubic boron nitride\u003c\/a\u003e).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOperational Limits\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSpeed\u003c\/strong\u003e: 10,000–30,000 RPM (varies by bur size).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCooling\u003c\/strong\u003e: Mandatory use of\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noreferrer\" href=\"https:\/\/lapidarygrinder.com\/collections\/water-swivel-adaptor\" target=\"_blank\"\u003ecoolants\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eto prevent thermal damage.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSafety\u003c\/strong\u003e: Wear\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noreferrer\" href=\"https:\/\/lapidarygrinder.com\/collections\/polishing-head-system\" target=\"_blank\"\u003eprotective gear\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003e(goggles, dust masks) to mitigate debris risks.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eComparison to Resin Bond Tools\u003c\/strong\u003e\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSintered Diamond Bur\u003c\/th\u003e\n\u003cth\u003eResin Diamond Bur\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBond Strength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUltra-durable, metal-bonded\u003c\/td\u003e\n\u003ctd\u003eModerate, resin-bonded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBest For\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHard materials (Mohs ≥9)\u003c\/td\u003e\n\u003ctd\u003eSofter materials (Mohs ≤8)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLifespan\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5–10x longer\u003c\/td\u003e\n\u003ctd\u003eShorter, prone to wear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCost Efficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigher upfront, lower long-term cost\u003c\/td\u003e\n\u003ctd\u003eLower upfront, frequent replacement needed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal for\u003c\/strong\u003e:\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noreferrer\" href=\"https:\/\/lapidarygrinder.com\/collections\/diamond-core-drill\" target=\"_blank\"\u003eAerospace engineers\u003c\/a\u003e,\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noreferrer\" href=\"https:\/\/lapidarygrinder.com\/collections\/diamond-saw-blades\" target=\"_blank\"\u003etoolmakers\u003c\/a\u003e, and\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noreferrer\" href=\"https:\/\/lapidarygrinder.com\/collections\/diamond-flat-lap-disc\" target=\"_blank\"\u003ehigh-precision workshops\u003c\/a\u003e.\u003cstrong\u003eExplore the\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noreferrer\" href=\"https:\/\/lapidarygrinder.com\/collections\/sintered-diamond-laps\" target=\"_blank\"\u003eSintered Diamond Bur Series\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor industrial-grade performance.\u003c\/strong\u003e\u003c\/p\u003e","brand":"hanslapidarytool","offers":[{"title":"Default Title","offer_id":51189399355576,"sku":null,"price":18.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0570\/3217\/9896\/files\/Flat_End_Sintered_Carving_Burs.jpg?v=1748238578","url":"https:\/\/lapidarygrinder.com\/en-mx\/products\/20mm-5pcs-flat-end-cylindrical-sintered-diamond-bur-6mm-shank","provider":"hanslapidarytool","version":"1.0","type":"link"}