{"product_id":"rd118a","title":"Rd118a","description":"\u003cp\u003eDirect replacement for the \u003cstrong\u003eZund R118-A (5211733)\u003c\/strong\u003e, with no modification needed. Router bit for light foam on \u003cstrong\u003eZund\u003c\/strong\u003e cutting systems with the RM-A QC or RM-A QC ARC router. 2-flute upcut bit with a 0.236 in (6.0 mm) cutting diameter on a 0.236 in (6.0 mm) shank.\u003c\/p\u003e\n\n\u003cp\u003eSold individually.\u003c\/p\u003e\n\n\u003c!--specs--\u003e\n\n\u003ch3\u003eDirect OEM replacement\u003c\/h3\u003e\n\u003cp\u003eThe Rd118a replaces the \u003cstrong\u003eZund R118-A (5211733)\u003c\/strong\u003e. It has a 0.236 in (6.0 mm) shank, 0.236 in (6.0 mm) cutting diameter, 1.063 in (27.0 mm) cutting length, and 2.953 in (75.0 mm) overall length, with the stop ring the ARC bit changer needs to set depth. If your router runs the R118-A now, the Rd118a drops straight in. Not sure? Contact us before you order.\u003c\/p\u003e\n\n\u003ch3\u003eWhat this bit is built for\u003c\/h3\u003e\n\u003cp\u003eZund lists the R118-A for light foam, under 3.2 lb\/ft³ (52 kg\/m³). The long 1.063 in (27.0 mm) cutting length reaches through thick foam sheet in one pass, and two flutes leave a smoother edge in soft foam than a single flute.\u003c\/p\u003e\n\n\u003ch3\u003eBuilt for the ARC bit changer\u003c\/h3\u003e\n\u003cp\u003eThis is the A-version. The stop ring sets the bit's depth in the collet, so the RM-A QC ARC automatic bit changer loads it at the same height every time. For routers without ARC, the standard \u003cstrong\u003eRd118\u003c\/strong\u003e replaces the \u003cstrong\u003eZund R118\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\n\u003ch4\u003eHow do I know this fits my machine?\u003c\/h4\u003e\n\u003cp\u003eThe Rd118a fits Zund RM-A QC and RM-A QC ARC routers that take the \u003cstrong\u003eZund R118-A\u003c\/strong\u003e. It has a 0.236 in (6.0 mm) shank. If your router does not use the stop ring, order the Rd118 instead. Not sure? Send us your machine model and we will confirm before you order.\u003c\/p\u003e\n\n\u003ch4\u003eWhat materials does it cut?\u003c\/h4\u003e\n\u003cp\u003eLight foam under 3.2 lb\/ft³ (52 kg\/m³). For denser foam, wood, or plastics, a different bit geometry is the better call. Reach out and we will help you pick the right one.\u003c\/p\u003e\n\n\u003ch4\u003eWhat speeds and feeds should I run?\u003c\/h4\u003e\n\u003cp\u003eMaximum spindle speed is 48,000 RPM. The right feed rate depends on the foam, its thickness, and your machine. If you need help dialing in settings, contact us. We run these machines every day.\u003c\/p\u003e\n\n\u003ch4\u003eHow do I know when to replace it?\u003c\/h4\u003e\n\u003cp\u003eWatch the edge finish. Torn or fuzzy foam edges, melting, or the bit dragging material instead of cutting it cleanly all mean it is time for a fresh bit.\u003c\/p\u003e\n\n\u003ch3\u003eGetting the most from your cutting table\u003c\/h3\u003e\n\u003cp\u003eA fresh bit is a good start. But if you are going through bits faster than expected, or edge quality has become inconsistent, the bit is rarely the whole story. Spindle speed, feed rate, depth per pass, material hold-down, and machine condition all affect how long a bit lasts and how clean it cuts.\u003c\/p\u003e\n\n\u003cp\u003eIt is worth asking: When was your machine last serviced? Are your parameters dialed in for this material? Is this the right bit for what you are cutting? Could your operators use time with someone who runs these machines every day?\u003c\/p\u003e\n\n\u003cp\u003eFlatbed Tools offers machine service, preventive maintenance, operator training, and workflow consulting. If something is not cutting right, reach out. We have probably seen it before.\u003c\/p\u003e","brand":"Flatbed Tools","offers":[{"title":"Default Title","offer_id":46416613965868,"sku":"641118","price":57.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0343\/5259\/4988\/files\/FBT_IG3_1_2.jpg?v=1738012037","url":"https:\/\/flatbedtools.com\/products\/rd118a","provider":"Flatbed Tools","version":"1.0","type":"link"}