{"product_id":"si-fang-1-6-diamond-cutting-wheel-set-precision-cuts-for-glass-metal","title":"40mm Diamond Cutting Wheel 1\/8 Mandrel - Mini Rotary Cut Discs","description":"\u003cp\u003eOur review of the 40mm diamond cutting wheel finds it best suited for hobbyists and light tradespeople who need a thin, precise cut disc for rotary tools. The biggest reason to buy is its combination of a slim 0.6mm kerf and dual-sided diamond coating, which lets users make tight cuts and light edge polishing on glass, tile, agate and soft metals while keeping material loss minimal. This review focuses on usability with common rotary tools, the included 1\/8 in mandrel fit, and safe handling notes observed during routine cutting and polishing tasks.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMini 40mm size:\u003c\/strong\u003e The 1.57 in diameter and 0.6mm thickness make these discs ideal for detailed model work and tight cuts where a small radius is needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-sided diamond coating:\u003c\/strong\u003e Diamond sand plated on both faces and the edge gives consistent cutting and usable polishing on ceramic, glass and stone edges.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel compatibility:\u003c\/strong\u003e Each pack includes 1\/8 in (3mm) mandrels so the discs mount cleanly on most rotary tools, cordless drills and air tools.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide material use:\u003c\/strong\u003e Suitable for agate, rocks, PVC, glass tile, ceramic alumina tubing and non-ferrous metals such as aluminum and copper.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThin kerf for precision:\u003c\/strong\u003e The small kerf minimizes material removal, which is helpful when trimming seams or refining intricate pieces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable bond:\u003c\/strong\u003e Surface plating secures the diamond sand to the steel core for wear resistance during light cutting and polishing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe 40mm diamond cutting wheel is aimed at DIYers, jewelry makers and hobby modelers who need a compact, low-kerf cutting disc for detailed work on glass, ceramic, tile and softer stones. It is also a practical accessory for contractors who need a small-diameter blade to get into narrow spaces for seam trimming and edge polishing.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include users who routinely cut very hard materials such as quartz or petrified wood, and professionals needing heavy-duty, high-volume metal cutting where thicker, reinforced blades or wet saws are preferable.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSmall 40mm diameter and 0.6mm thickness enable precise cuts and low material loss.\u003c\/li\u003e\n\u003cli\u003eDual-sided diamond coating allows both cutting and light polishing of edges.\u003c\/li\u003e\n\u003cli\u003eComes with 1\/8 in mandrels that fit common rotary tools for immediate use.\u003c\/li\u003e\n\u003cli\u003eUseful across a wide range of materials including glass, ceramic and soft metals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNot recommended for very hard materials like quartz or petrified wood, limiting use for some stoneworkers.\u003c\/li\u003e\n\u003cli\u003eDisc can become hot during extended cuts and benefits from water cooling, adding setup time for some tasks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSI FANG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisc diameter\u003c\/td\u003e\n\u003ctd\u003e40mm (1.57 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisc thickness\u003c\/td\u003e\n\u003ctd\u003e0.6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMandrel shaft\u003c\/td\u003e\n\u003ctd\u003e3mm (1\/8 in), length 38mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eDual-sided diamond plating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterials suitable\u003c\/td\u003e\n\u003ctd\u003eGlass, ceramic, agate, rocks, PVC, aluminum, copper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 40mm diamond cutting wheel is a compact, good-value accessory for hobbyists and light trades who need precise, low-kerf cuts and occasional edge polishing on glass, ceramic and softer stones. It performs well on small-scale tasks when used with a compatible rotary tool and proper safety measures, though users cutting very hard stones should choose a different blade type.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this fit my Dremel-style rotary tool?\u003c\/strong\u003e\u003cbr\u003eYes, the pack uses a 3mm (1\/8 in) mandrel that fits most Dremel-style rotary tools, cordless drills and air tools that accept that shaft size.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I cut quartz or petrified wood with these discs?\u003c\/strong\u003e\u003cbr\u003eNo, these discs are not recommended for quartz or petrified wood; they are intended for softer stones, glass, ceramic and non-ferrous metals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAny special safety or cooling steps?\u003c\/strong\u003e\u003cbr\u003eWear gloves and goggles, mount the mandrel fully seated, and consider adding water to keep the disc cool during prolonged cuts to prevent overheating.\u003c\/p\u003e","brand":"SI FANG","offers":[{"title":"Default Title","offer_id":46765855178971,"sku":"B0D17HGTHH","price":12.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81ToH3CP0mL._SL1500.jpg?v=1747538709","url":"https:\/\/gearmusthave.com\/products\/si-fang-1-6-diamond-cutting-wheel-set-precision-cuts-for-glass-metal","provider":"GearMustHave","version":"1.0","type":"link"}