{"product_id":"3-0mm-diamond-hollow-cup-burrs-engraving-jewelry","title":"3.0mm 100pcs Diamond Hollow Cup Burrs – Precision Engraving \u0026 Jewelry Work","description":"\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eDiamond Hollow Cup Bur\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a specialized grinding tool engineered for rapid material removal, hollowing, and shaping applications on hard surfaces such as gemstones, glass, ceramics, and metals. Featuring a concave design with\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/lapidarygrinder.com\/\" rel=\"noreferrer\" target=\"_blank\"\u003eelectroplated diamond particles\u003c\/a\u003e, this bur delivers aggressive cutting power while maintaining precision, making it indispensable for lapidary artists, jewelers, and industrial craftsmen.\u003c\/p\u003e\n\u003ch3\u003eKey Features:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Efficiency Design\u003c\/strong\u003e: The hollow cup shape allows for deep grinding and contouring, ideal for\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/diamond-carving-bur\" rel=\"noreferrer\" target=\"_blank\"\u003ecarving\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ecavities or refining curved surfaces in materials like\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/lapidarygrinder.com\/\" rel=\"noreferrer\" target=\"_blank\"\u003eglass\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/lapidarygrinder.com\/\" rel=\"noreferrer\" target=\"_blank\"\u003estainless steel\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDurable Construction\u003c\/strong\u003e: Reinforced with a\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/diamond-grinding-wheel\" rel=\"noreferrer\" target=\"_blank\"\u003epremium diamond abrasive\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ebonded to a hardened steel core, ensuring longevity even under heavy use.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVersatile Compatibility\u003c\/strong\u003e: Compatible with standard\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/diamond-grinding-wheel\" rel=\"noreferrer\" target=\"_blank\"\u003egrinders\u003c\/a\u003e, rotary tools, and\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/lapidarygrinder.com\/\" rel=\"noreferrer\" target=\"_blank\"\u003ebench grinders\u003c\/a\u003e, offering flexibility across workflows.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMulti-Grit Options\u003c\/strong\u003e: Available in coarse to fine grits for rough shaping or finishing delicate surfaces like\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/lapidarygrinder.com\/\" rel=\"noreferrer\" target=\"_blank\"\u003eopal\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eor\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/lapidarygrinder.com\/\" rel=\"noreferrer\" target=\"_blank\"\u003eturquoise\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIdeal For:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eHollowing out gemstone cores or creating intricate undercuts in\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/lapidarygrinder.com\/\" rel=\"noreferrer\" target=\"_blank\"\u003ecabochon\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eproduction.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSmoothing rough edges on\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/diamond-saw-blades\" rel=\"noreferrer\" target=\"_blank\"\u003ediamond saw blades\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eor\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/diamond-grinding-wheel\" rel=\"noreferrer\" target=\"_blank\"\u003egrinding wheels\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePairing with\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/flexible-diamond-disc\" rel=\"noreferrer\" target=\"_blank\"\u003eflexible diamond discs\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eor\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/diamond-resin-sanding-belt\" rel=\"noreferrer\" target=\"_blank\"\u003eresin-bonded belts\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor multi-stage polishing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eShank Size\u003c\/strong\u003e: 2.35mm  (fits most rotary tools and\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/reducing-bushing\" rel=\"noreferrer\" target=\"_blank\"\u003earbor adapters\u003c\/a\u003e).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGrit Range\u003c\/strong\u003e: 80–1200 mesh for versatility in material processing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCoating\u003c\/strong\u003e:\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/lapidarygrinder.com\/\" rel=\"noreferrer\" target=\"_blank\"\u003eElectroplated\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ediamond layers for consistent performance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAdditional Resources:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eEnhance results with\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/diamond-compound-paste\" rel=\"noreferrer\" target=\"_blank\"\u003ediamond compound paste\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor a flawless finish.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eExplore complementary tools like\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/diamond-nova-point\" rel=\"noreferrer\" target=\"_blank\"\u003eDiamond Nova Points\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eor\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/lapidarygrinder.com\/collections\/metal-backing-plate\" rel=\"noreferrer\" target=\"_blank\"\u003emetal backing plates\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor stability during heavy grinding.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"hanslapidarytool","offers":[{"title":"Default Title","offer_id":41537919909934,"sku":null,"price":14.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0575\/4542\/4942\/files\/Diamond_Hollow_Cup_Burs_7130a58f-29d8-4275-be13-a58bfc1748f7.jpg?v=1757997143","url":"https:\/\/hanslapidarytool.com\/products\/3-0mm-diamond-hollow-cup-burrs-engraving-jewelry","provider":" Hans Lapidary Tool","version":"1.0","type":"link"}