--- product_id: 46289296 title: "6\" inch 150 mm Grit 80 Diamond Grinding Disc Abrasive Wheel Coated Flat Lap Disk Jewelry Tools for Gemstone Glass Rock Ceramics" brand: "joiner" price: "Β₯4465" currency: JPY in_stock: true reviews_count: 8 url: https://www.desertcart.jp/products/46289296-6-inch-150-mm-grit-80-diamond-grinding-disc-abrasive store_origin: JP region: Japan --- # 6-inch precision diameter 80 grit coarse for fast material removal 1/2-inch arbor for universal fit 6" inch 150 mm Grit 80 Diamond Grinding Disc Abrasive Wheel Coated Flat Lap Disk Jewelry Tools for Gemstone Glass Rock Ceramics **Brand:** joiner **Price:** Β₯4465 **Availability:** βœ… In Stock ## Summary > πŸ’Ž Grind like a pro, shine like a star! ## Quick Answers - **What is this?** 6" inch 150 mm Grit 80 Diamond Grinding Disc Abrasive Wheel Coated Flat Lap Disk Jewelry Tools for Gemstone Glass Rock Ceramics by joiner - **How much does it cost?** Β₯4465 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/46289296-6-inch-150-mm-grit-80-diamond-grinding-disc-abrasive) ## Best For - joiner enthusiasts ## Why This Product - Trusted joiner brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Durable Diamond Abrasive:** Long-lasting coated surface ensures consistent performance and superior finish every time. - β€’ **Universal 1/2-Inch Arbor:** Fits most standard grinders and lapidary machines for seamless integration. - β€’ **Precision 6-Inch Diameter:** Engineered for exact flatness and parallelism to meet professional faceting standards. - β€’ **Aggressive 80 Grit Coating:** Delivers rapid grinding on gemstones, glass, and ceramics without sacrificing control. - β€’ **Versatile Material Compatibility:** Perfect for gemstone, jewelry, glass, rock, and knife carving projectsβ€”expand your creative toolkit. ## Overview This 6-inch (150mm) diamond grinding disc features an 80 grit coarse abrasive coating and a 1/2-inch arbor hole, designed for precision flat lapping of gemstones, glass, ceramics, and rock. Its perfectly flat and parallel surface meets demanding faceting requirements, making it an essential tool for hobbyists and professionals seeking fast, reliable material removal with superior finish quality. ## Description JINGLING 6 inch Diamond Coated Flat Lap Disk Grinding Disc Grit 80 Coarse Product Name: 6 inch diamond grinding wheel, diamond lapidary discs, diamond lapping disc Outside diameter : 6" inch (150mm) Arbor hole : 1/2" (12.7 mm) Thickness : 1.2 mm Grit : 80 (Coarse) Quantity: 1 Piece Diamond coating Density : Perfectly high Diamond coating surface area : almost 95%, only one side is coated diamond Wet use recommended When used as part of a multi-stage grinding and polishing process it's easy to create smooth finished edges with a professional look Suitable to grinding gemstone, jewelry, glass, rock, carving knife, etc. These diamond discs are one of the finest discs manufactured for Hobby, Lapidary, Glass applications The diameter flat lap wheels have a high density quality diamond coating They are absolutely flat and parallel to meet the most exacting faceting requirements Quick Tips 1. Recommended for rough and fine grinding on faceting material plus general lapidary grinding when precision is required 2. All our flat laps wheels have a 1/2" arbor hole and are intended to be mechanically clamped to a Master Lap 3. The laps are made with 1mm thick steel plate that has been machined true and flat. The lap is stiff enough to be used as is, but we recommend with the use of Aluminum Master Lap Also Available in Grits 60, 80, 100, 150, 240, 320, 400, 500, 600, 800,1000, 1200, 1500, 1800, 2000, 3000 We will send out your order within 1-2 days after payment has been received and cleared ## Features - Product Name: 6" flat lap disc, 6" diamond wheel, diamond lapping disc - Outside diameter: 6" inch (150mm); Arbor hole: 1/2" (12.7 mm); Thickness: 1.2 mm; Grit : 80(coarse) - Suitable to grinding gemstone, jewelry, glass, rock, carving knife, etc - These diamond discs are one of the finest discs manufactured for Hobby, Lapidary, Glass applications - They are absolutely flat and parallel to meet the most exacting faceting requirements ## Product Details - **Grit Material:** Diamond - **Product Dimensions:** 6"L x 6"W - **Brand:** JOINER - **Compatible Devices:** Lapidary Machine - **Grit Type:** Coarse ## Images ![6" inch 150 mm Grit 80 Diamond Grinding Disc Abrasive Wheel Coated Flat Lap Disk Jewelry Tools for Gemstone Glass Rock Ceramics - Image 1](https://m.media-amazon.com/images/I/71KHkrI7ezL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent alternative to 6 inch grinding wheels *by A***. on December 12, 2018* I discovered this disc a couple weeks ago when I bought a woodworking lathe and needed to sharpen chisels and shape a high speed steel blank. I made a 3/4 inch x 5 3/4 inch plywood disc with a half inch hole as a backing for the diamond disc and put them together on my 6 inch bench grinder. I always have some wheel wobble because the arbor washers are cheap stamped steel. I get rid of almost all the wheel wobble by inserting paper shims at the appropriate places between the washer and the plywood disc, like balancing a car wheel and tire. Since my grinder doesn't have an arbor lock I use a pair of long nose vise grips to lock on to the grinder shaft when I am tightening and loosening the nut. I bought a really nice pair at Harbor Freight for $6 or $7. Locking the shaft lets me keep the washer and plywood disc stable so I can insert the shims exactly where I need them.Figuring out where to place the shims is easy. I clamped a wood block next to the wheel and rotated the wheel by hand so the block touched the wheel at the point of most wobble. Then I slipped paper shims between the washer and plywood disc on the opposite side. It only takes perhaps 2 or three thicknesses of paper to straighten the wheel.I love grinding on the diamond disc. It works fast and doesn't heat up the steel as fast as a wheel and there is virtually no danger of the tool exploding. My grinder is 3,750 rpms which is faster than I prefer, but the disc surface speed is naturally slower towards the center so you can control metal removal in that fashion. ### ⭐⭐⭐⭐⭐ Great value, performs well *by D***H on November 1, 2023* This thing is great for sharpening carbide lathe tool bits for metal cutting. I glued it to a flat MDF faceplate and I use it together with the standard wood-lathe tool rest at pretty low speed, to sharpen carbide-tipped bits by hand. The 320 grit seems about right for this. ### ⭐⭐⭐⭐ Great diamond disc for the $$$ *by E***H on December 9, 2018* These diamond discs are great for the price. I have a GRS power hone and at 100 bucks a disc it's extremely expensive. I did have to put a master lap or backer behind the discs or even double them up to get rid of any wobble. All in all they are great discs and I've sharpened many gravers already and the discs are still in great shape. I kostly sharpen carbide tools and some hss to give you an idea of what I'm doing with the discs. I imagine I can sharpen more gravers at 10 bucks a disc x10 than I could on 1 disc at 100. I will buy again when needed. And would recommend. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/46289296-6-inch-150-mm-grit-80-diamond-grinding-disc-abrasive](https://www.desertcart.jp/products/46289296-6-inch-150-mm-grit-80-diamond-grinding-disc-abrasive) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-15*