{"product_id":"extra-long-electroplated-diamond-thin-wall-drill-bits-18mm","title":"18mm Extra-Long Electroplated Diamond Thin-Wall Drill Bit – 10mm Shank for Gemstones \u0026 Glass","description":"\u003cp\u003eThese extra-long electroplated diamond thin-wall drill bits are designed for precision drilling in gemstones, jade, agate, glass, ceramics, and other hard, brittle materials. Featuring a thin-wall construction, uniform diamond coating, and an extended drilling length, they are ideal for deep-hole drilling and applications requiring high dimensional accuracy.\u003c\/p\u003e\u003cp\u003eWith a nominal wall thickness of only 0.5 mm, these drill bits help minimize material loss while delivering clean, precise holes. The extended design provides additional drilling depth for workpieces that cannot be drilled effectively with standard-length bits.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Drilling Length:\u003c\/strong\u003e Overall length of 80 mm or more, with an effective drilling depth of approximately 57–60 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThin-Wall Design:\u003c\/strong\u003e Approximately 0.5 mm wall thickness helps reduce material waste and minimize drilling resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniform Diamond Coating:\u003c\/strong\u003e Consistent electroplated diamond coverage supports stable cutting performance and extended tool life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Drilling Precision:\u003c\/strong\u003e Clean hole edges and reduced chipping when operated under suitable conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmooth Drilling Performance:\u003c\/strong\u003e Narrow cutting wall reduces resistance and facilitates debris removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Applications:\u003c\/strong\u003e Suitable for gemstones, jade, agate, glass, ceramics, porcelain, and other hard, brittle materials.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Diameter:\u003c\/strong\u003e 18 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter:\u003c\/strong\u003e 10 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEffective Drilling Depth:\u003c\/strong\u003e 57–60 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length:\u003c\/strong\u003e 80 mm or longer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Wall Thickness:\u003c\/strong\u003e 0.5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 45 g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBond Type:\u003c\/strong\u003e Electroplated Diamond\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eInstructions for Use\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003eUse an appropriate rotational speed for the drill diameter and workpiece material.\u003c\/li\u003e\n\u003cli\u003eApply light, consistent feed pressure. Avoid excessive force.\u003c\/li\u003e\n\u003cli\u003eAlways use water cooling where compatible to control heat and flush away drilling debris.\u003c\/li\u003e\n\u003cli\u003eAllow the diamond cutting surface to engage the material gradually.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"flexiblediamondabrasive","offers":[{"title":"Default Title","offer_id":54274564096184,"sku":"DRL-TW-XL-18MM","price":40.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0570\/3217\/9896\/files\/extra_long_diamond_drill_bits_horizontal_clean.png?v=1791525962","url":"https:\/\/lapidarygrinder.com\/pl\/products\/extra-long-electroplated-diamond-thin-wall-drill-bits-18mm","provider":"hanslapidarytool","version":"1.0","type":"link"}