{"product_id":"rs109","title":"Rs109","description":"\u003cp\u003eDirect replacement for the \u003cstrong\u003eZund R109 (3910739)\u003c\/strong\u003e, with no modification needed. Router bit for acrylic and aluminum on \u003cstrong\u003eZund\u003c\/strong\u003e cutting systems with the RM-A, RM-A QC, RM-S, or R45-s router module. 1-flute upcut bit with a 0.157 in (4.0 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 Rs109 replaces the \u003cstrong\u003eZund R109 (3910739)\u003c\/strong\u003e. It has a 0.236 in (6.0 mm) shank, 0.157 in (4.0 mm) cutting diameter, 0.236 in (6.0 mm) cutting length, and 1.969 in (50.0 mm) overall length. If your router runs the R109 now, the Rs109 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 R109 for acrylic and aluminum. The short 0.236 in (6.0 mm) cutting length keeps the bit stiff, which helps it hold a clean edge in thin sheet.\u003c\/p\u003e\n\n\u003ch3\u003eSingle flute, upcut\u003c\/h3\u003e\n\u003cp\u003eOne flute leaves the most room for chips to clear, which keeps heat down and helps stop acrylic from melting behind the bit. The upcut direction pulls chips up and out of the cut, leaving a clean bottom edge.\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 Rs109 fits Zund RM-A, RM-A QC, RM-S, and R45-s router modules that take the \u003cstrong\u003eZund R109\u003c\/strong\u003e. It has a 0.236 in (6.0 mm) shank. Zund does not list the R109 for the RM-L. If you are not sure which router module you have, 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\u003eAcrylic and aluminum in thin sheet. For thicker material, a bit with a longer cutting length is the better call. If the top face matters most, a downcut bit like the Rs124d leaves a cleaner top edge. 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 46,600 RPM. The right feed rate depends on the material, 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 and the chips. Rough or fuzzy edges, burrs on aluminum, melted or re-welded edges on acrylic, or fine powder instead of clean chips 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":46416043278380,"sku":"640109","price":31.0,"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\/rs109","provider":"Flatbed Tools","version":"1.0","type":"link"}