{"product_id":"2-1x12x3-175-router-bit-for-metal-pcb","title":"2.1x12x3.175 router bit for metal pcb","description":"\u003ch2\u003e\n\u003cb\u003e2.1x12x3.175 router bit for metal pcb\u003c\/b\u003e\u003cbr\u003e\u003cspan\u003eA 2.1mm x 12mm x 3.175mm router bit\u003c\/span\u003e\u003cspan\u003e is a highly specialized CNC milling tool designed primarily for cutting, engraving, and depaneling circuit boards.\u003c\/span\u003e\u003cspan\u003eThe dimensions break down as follows:\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e2.1 mm Cutting Edge Diameter (CED):\u003cspan\u003e \u003c\/span\u003eThe thickness of the cut or groove it produces.\u003c\/li\u003e\n\u003cli\u003e12 mm Cutting Edge Length (CEL \/ Flute Length):\u003cspan\u003e \u003c\/span\u003eThe maximum depth the bit can safely plunge or mill in a vertical pass.\u003c\/li\u003e\n\u003cli\u003e3.175 mm Shank Diameter (SD):\u003cspan\u003e \u003c\/span\u003eEqual to a standard 1\/8\" shank, making it universally compatible with most PCB CNC milling machines, desktop routers, and rotary tools (like Dremels with a 1\/8\" collet).\u003cspan\u003e \u003c\/span\u003e[1, 2]\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eMaterial \u0026amp; Build Recommendations\u003c\/span\u003e\u003cspan\u003eWhen working with metal-core PCBs (MCPCBs)\u003c\/span\u003e\u003cspan\u003e—which typically utilize an aluminum or copper substrate layer for heat dissipation—standard fiberglass router bits will dull almost instantly. To cut through metal PCBs cleanly, look for the following specifications:\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSolid Tungsten Carbide:\u003cspan\u003e \u003c\/span\u003eEnsure the bit is manufactured from high-grade solid tungsten carbide (tungsten steel). This material retains its hardness at extreme temperatures, ensuring a clean finish without melting the board composite or burring the metal backing.\u003cspan\u003e \u003c\/span\u003e[1, 2, 3]\u003c\/li\u003e\n\u003cli\u003eCorn Cob \/ Diamond Cut Geometric Flutes:\u003cspan\u003e \u003c\/span\u003eStandard two-flute wood router bits will chatter and break on metal. A diamond-cut or \"corn cob\" abrasive tooth geometry acts like a high-speed file. It breaks metal and epoxy into microscopic chips rather than long strands, preventing the tool from binding and snapping.\u003cspan\u003e \u003c\/span\u003e[1]\u003c\/li\u003e\n\u003cli\u003eAlTiN or Diamond Coating (Optional but Recommended):\u003cspan\u003e \u003c\/span\u003eLook for CVD diamond-film or Titanium-based coatings if you are cutting high volumes of aluminum or copper-backed PCBs. This reduces friction and exponentially extends tool life.\u003cspan\u003e \u003c\/span\u003e[1]\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eWhere to Source\u003c\/span\u003e\u003cspan\u003eWhile an exact 2.1mm variant can sometimes be more difficult to find than standard 2.0mm or 3.0mm bits, specialty industrial tool manufacturers and large electronic component marketplaces carry them:\u003c\/span\u003e\u003c\/p\u003e","brand":"QYSMT","offers":[{"title":"Default Title","offer_id":49351152140427,"sku":null,"price":0.0,"currency_code":"INR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0568\/9579\/9435\/files\/2.1x12x3.175routerbitformetalpcb_4.png?v=1789212244","url":"https:\/\/www.qysmt.in\/products\/2-1x12x3-175-router-bit-for-metal-pcb","provider":"QYSMT","version":"1.0","type":"link"}