{"product_id":"diamond-mounted-point-grinding-bit-spherical-concave-head-10-25mm","title":"Diamond Mounted Point Grinding Bit 10-25mm Spherical Concave Head","description":"\n\u003ch2\u003eNEWONE Diamond Mounted Point Grinding Bit — Spherical Concave Head, 10–25mm\u003c\/h2\u003e\n\u003cp\u003eCraft flawless spherical beads from jade, amber, stone, beeswax, glass, and more with this precision-engineered \u003cstrong\u003ediamond mounted point grinding bit\u003c\/strong\u003e. Featuring an electroplated diamond surface with a spherical concave head, it shapes and grinds round beads cleanly and accurately with minimal chipping — perfect for lapidary artists, jewelry makers, and DIY craftspeople.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectroplated Diamond Abrasive:\u003c\/strong\u003e High hardness and excellent wear resistance ensure long-lasting, consistent performance across many projects.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpherical Concave Head Design:\u003c\/strong\u003e Specially engineered for forming and grinding spherical beads — produces clean, accurate results in minutes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Suitable for jade, amber, stone, beeswax, glass, and other semi-precious or decorative materials.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfered Round Shank (6mm):\u003c\/strong\u003e Ensures secure clamping and a stable, vibration-free working process.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy to Use:\u003c\/strong\u003e Compatible with bench drills and hand drills. Recommended operating speed: up to 3,000 RPM.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Diameter Range:\u003c\/strong\u003e Available from 10mm to 25mm — choose the size that best suits your bead-making needs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eElectroplated Diamond\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHead Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10–25mm (select your size)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShank Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHead Shape\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpherical \/ Concave\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecommended Speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 3,000 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Materials\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eJade, Amber, Stone, Beeswax, Glass\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage Contents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 × Diamond Mounted Point Grinding Bit\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eHow to Use\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eSelect the appropriate head diameter (10–25mm) for your bead size.\u003c\/li\u003e\n  \u003cli\u003eSecure the 6mm chamfered shank firmly in your drill chuck.\u003c\/li\u003e\n  \u003cli\u003eSet your drill speed to no more than 3,000 RPM for optimal results.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAlways use a lubricant\u003c\/strong\u003e (water or cutting fluid) to cool the workpiece and bit during operation. This significantly extends the life of the mounted point.\u003c\/li\u003e\n  \u003cli\u003eApply light pressure — letting the diamond surface do the work reduces wear and improves bead quality.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003ePro Tips\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eUse ample water lubrication and keep drill pressure low for best results and longest bit life.\u003c\/li\u003e\n  \u003cli\u003eIdeal for jewelry crafters, gemstone artisans, and lapidary hobbyists.\u003c\/li\u003e\n  \u003cli\u003eWork slowly and steadily for the cleanest, most precise spherical beads.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor general tool safety guidance, visit CPSC Power Tool Safety.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What materials can this diamond grinding bit work on?\u003c\/h4\u003e\n\u003cp\u003eA: This diamond mounted point grinding bit is designed for use on jade, amber, stone, beeswax, and glass. Its electroplated diamond surface provides the hardness needed to shape and smooth these semi-precious and decorative materials with precision.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What drill type is compatible with this grinding bit?\u003c\/h4\u003e\n\u003cp\u003eA: The bit is compatible with most standard bench drills and handheld drills that accept a 6mm shank. The chamfered round shank design ensures a secure, stable clamp. Recommended operating speed is up to 3,000 RPM.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Do I need to use lubricant while grinding?\u003c\/h4\u003e\n\u003cp\u003eA: Yes — always use water or cutting fluid as a lubricant while the bit is in operation. Keeping the workpiece and bit cool reduces friction, prevents overheating, and significantly extends the working life of the diamond mounted point.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I choose the right head diameter?\u003c\/h4\u003e\n\u003cp\u003eA: Select a head diameter that matches or slightly exceeds the desired bead size you want to create. Sizes range from 10mm to 25mm, offering flexibility for a wide variety of bead and stone-forming projects.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What materials can this diamond grinding bit work on?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This diamond mounted point grinding bit is designed for use on jade, amber, stone, beeswax, and glass. 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