{"product_id":"concave-abrasive-grinding-wheel-glass-jade-bead-bracelet-polishing","title":"Concave Abrasive Grinding Wheel – Jade, Glass \u0026 Bead Polishing","description":"\n\u003ch2\u003eConcave Abrasive Grinding Wheel for Glass, Jade, Beads \u0026amp; Bracelets\u003c\/h2\u003e\n\u003cp\u003eAchieve smooth, precise curved profiles on glass edges, jade carvings, bracelets, rings, and beads with the \u003cstrong\u003eRAMS BRALIN Concave Abrasive Grinding Wheel\u003c\/strong\u003e. Crafted from durable emery material, this handle grinding tool mounts easily on a bench drill or electric drill, delivering consistent results for both hobbyists and professional lapidary artists. Made in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Working Slot Sizes:\u003c\/strong\u003e Available in 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, and 12mm — perfect for a wide range of bead, ring, and bracelet arc profiles.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo Grit Options:\u003c\/strong\u003e P150 Medium for shaping and material removal; P400 Fine for smooth finishing and polishing passes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Dimensions:\u003c\/strong\u003e 20mm outer diameter with a 6mm shank diameter for compatibility with most rotary tools, bench drills, and electric drills.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEmery Construction:\u003c\/strong\u003e High-quality emery abrasive provides long-lasting cutting performance on glass, jade, stone, and similar hard materials.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWet Grinding Ready:\u003c\/strong\u003e Designed for water-cooled operation to maximise wheel life and surface finish quality.\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\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRAMS BRALIN\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCAW01\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEmery\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOuter Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20mm\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\u003eWorking Slot Sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3 \/ 4 \/ 5 \/ 6 \/ 8 \/ 10 \/ 12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGrit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eP150 Medium | P400 Fine\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecommended Speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eElectric drill: 3,600 RPM | Bench drill \/ machine: 6,000–10,000 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\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 slot size that matches your bead, ring, or bracelet arc profile.\u003c\/li\u003e\n  \u003cli\u003eSecure the 6mm shank in your drill chuck or rotary tool collet.\u003c\/li\u003e\n  \u003cli\u003eSet speed to the recommended RPM range for your machine type.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAlways add water\u003c\/strong\u003e during grinding to cool the wheel and workpiece, and to achieve the best surface finish.\u003c\/li\u003e\n  \u003cli\u003eStart with P150 Medium grit for rough shaping, then switch to P400 Fine for a smooth, polished result.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eIdeal for grinding and polishing glass edges, jade carvings, stone beads, bracelet arcs, ring channels, and other curved hard-material surfaces. A must-have tool for lapidary work, jewellery making, and DIY stone crafting.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/leather-hole-punch-tool-diy-stitching-punch-4-5-6mm\"\u003eLeather Hole Punch Tool | DIY Stitching Punch 4\/5\/6mm\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/uv-shaped-leather-groover-skiving-tool-kit-4-piece-diy\"\u003eU \u0026amp; V Leather Groover Skiving Tool Kit – 4-Piece Stainless Set\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/stainless-steel-ceramic-trimming-tool-curved-skip-knife\"\u003eStainless Steel Ceramic Trimming Tool – Curved Skip Knife\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What materials can the concave abrasive grinding wheel work on?\u003c\/h4\u003e\n\u003cp\u003eA: This emery concave grinding wheel is designed for hard materials including glass, jade, stone, and similar minerals. It excels at grinding bead arcs, bracelet channels, ring grooves, and glass edges into smooth, curved profiles.\u003c\/p\u003e\n\u003ch4\u003eQ: Do I need to use water when operating this grinding wheel?\u003c\/h4\u003e\n\u003cp\u003eA: Yes — water cooling is strongly recommended during all grinding and polishing operations. Adding water prevents overheating, extends wheel life, and produces the best possible surface finish on your workpiece.\u003c\/p\u003e\n\u003ch4\u003eQ: What drill speed should I use with this wheel?\u003c\/h4\u003e\n\u003cp\u003eA: For electric drills, a speed of approximately 3,600 RPM is recommended. For bench drills or dedicated grinding machines, 6,000–10,000 RPM delivers optimal performance. Always ensure the shank is securely seated in the chuck before operating.\u003c\/p\u003e\n\u003ch4\u003eQ: Which grit should I start with — P150 or P400?\u003c\/h4\u003e\n\u003cp\u003eA: Begin with the P150 Medium grit for initial shaping and material removal. Once the desired profile is achieved, switch to the P400 Fine grit wheel to smooth and polish the surface to a refined finish.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What materials can the concave abrasive grinding wheel work on?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This emery concave grinding wheel is designed for hard materials including glass, jade, stone, and similar minerals. It excels at grinding bead arcs, bracelet channels, ring grooves, and glass edges into smooth, curved profiles.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need to use water when operating this grinding wheel?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes — water cooling is strongly recommended during all grinding and polishing operations. Adding water prevents overheating, extends wheel life, and produces the best possible surface finish on your workpiece.\"}}, {\"@type\": \"Question\", \"name\": \"What drill speed should I use with this wheel?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"For electric drills, a speed of approximately 3,600 RPM is recommended. For bench drills or dedicated grinding machines, 6,000–10,000 RPM delivers optimal performance. Always ensure the shank is securely seated in the chuck before operating.\"}}, {\"@type\": \"Question\", \"name\": \"Which grit should I start with — P150 or P400?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Begin with the P150 Medium grit for initial shaping and material removal. Once the desired profile is achieved, switch to the P400 Fine grit wheel to smooth and polish the surface to a refined finish.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/gf1krb-by.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/gf1krb-by.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Concave Abrasive Grinding Wheel – Jade, Glass \u0026 Bead Polishing\", \"item\": \"https:\/\/gf1krb-by.myshopify.com\/products\/concave-abrasive-grinding-wheel-glass-jade-bead-bracelet-polishing\"}]}\u003c\/script\u003e","brand":"NIFTY","offers":[{"title":"TH 12mm P150","offer_id":67882655187168,"sku":"14:496#TH 12mm P150","price":21.66,"currency_code":"USD","in_stock":true},{"title":"TH 12mm P400","offer_id":67882655219936,"sku":"14:1052#TH 12mm P400","price":21.66,"currency_code":"USD","in_stock":true},{"title":"TH 6mm P150","offer_id":67882655252704,"sku":"14:29#TH 6mm P150","price":20.46,"currency_code":"USD","in_stock":true},{"title":"TH 6mm P400","offer_id":67882655285472,"sku":"14:94#TH 6mm P400","price":20.11,"currency_code":"USD","in_stock":true},{"title":"TH 5mm P150","offer_id":67882655318240,"sku":"14:350853#TH 5mm P150","price":19.94,"currency_code":"USD","in_stock":true},{"title":"TH 5mm P400","offer_id":67882655351008,"sku":"14:10#TH 5mm P400","price":19.83,"currency_code":"USD","in_stock":true},{"title":"TH 10mm P150","offer_id":67882655383776,"sku":"14:193#TH 10mm P150","price":21.38,"currency_code":"USD","in_stock":true},{"title":"TH 10mm P400","offer_id":67882655416544,"sku":"14:366#TH 10mm P400","price":21.38,"currency_code":"USD","in_stock":true},{"title":"TH 8mm P150","offer_id":67882655449312,"sku":"14:173#TH 8mm P150","price":20.57,"currency_code":"USD","in_stock":true},{"title":"TH 3mm P400","offer_id":67882655482080,"sku":"14:771#TH 3mm P400","price":18.78,"currency_code":"USD","in_stock":true},{"title":"TH 8mm P400","offer_id":67882655514848,"sku":"14:175#TH 8mm P400","price":20.71,"currency_code":"USD","in_stock":true},{"title":"TH 4mm P150","offer_id":67882655547616,"sku":"14:350850#TH 4mm P150","price":17.94,"currency_code":"USD","in_stock":true},{"title":"TH 4mm P400","offer_id":67882655580384,"sku":"14:350852#TH 4mm P400","price":20.11,"currency_code":"USD","in_stock":true},{"title":"TH 3mm P150","offer_id":67882655613152,"sku":"14:350686#TH 3mm P150","price":19.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0831\/5384\/6496\/files\/H8da5dbeeb4d24f38966847f7b1fee2abA.webp?v=1791773769","url":"https:\/\/niftyshopmart.com\/products\/concave-abrasive-grinding-wheel-glass-jade-bead-bracelet-polishing","provider":"NIFTY","version":"1.0","type":"link"}