Router bits are cutting tools, so of course it makes sense to sharpen them. You can either do it yourself or pay a whopping $10 to get it sharpened at a hardware store from a professional handyman. However, if you want to go at it yourself then you are going to need some diamond honing files which will run you around $6.  I would go with a Spiral Bit if you can afford it. If not, then try using two Flute Bits with bottom cutters to get similar results. Cut the Plywood Into a Circle. Take off the sub-base of the router to determine how big the circular end of the jig should be. Cut the end of the piece of 36" x 14" x 1/4" plywood into a circle the same size as the router's sub-base. Step 2. Drill Holes in the Circle.  To use the jig to cut a circle, draw a line on the work piece from its center to the end of the desired radius of the circle. Center the router atop the end point of the radius.  Set the router bit to the appropriate depth. Slowly swing the router through the work piece, using the wood block as a pivot point (image 2). Repeat the process as necessary, slowly lowering the bit with each pass. Next Up. How to Use Router Templates and Bearing Guides. Tools- router 1/4" router bit 3/4" router bit straight edge pencil drill or drill press 1/4" drill bit chamfer bit saw (prefferably a tablesaw or bandsaw, but any will work). Materials- Scrap of MDF or cabinet grade plywood 1/4"x20 tpi threaded rod 3" long (or a 1/4"x20 tpi bolt with the head cut off) 1/4" x20 tpi T nut (or pre-made t-handle) 1/4"x20 tpi standard nut 3/4" OD washer. I don't have a cost for the materials, because it was made entirely from items I had on hand. I would think that most of not all of these materials could be found i. RU Standard Up Cut Spiral Router Bit 5/32" D X 5/8" CL 1/4" SH 2" OL. Straight Router Bit 3/8" D X 1" CL. RU Standard Up Cut Spiral Router Bit 1/2" D X 2" CL 1/2" SH 4" OL. RU 5mm Solid-Carbide Up-Cut Spiral Router Bit 5mm Diameter 5/8" Cut Length 1/4" Shank. Jan 07,  · Just use a straight bit of the appropriate size and "ramp" into the cut. By ramping you plunge to your preset depth as you are moving around the circle. You should reach your preset depth within 3 or 4 inches of travel but it means you will need to go beyond your starting point by that amount to complete the cut. Sep 22,  · Best Router Jigs for Cutting Small Circles. CRB7 Universal Combination Router Jig. Jasper J Circle Cutting Jig. Milescraft SmallCircleCompass - Router Circle Cutting Jig. Conclusion. You may encounter several problems when cutting circles, and some of these problems may include burning and tear out.
Alternatively, if a hole would be acceptable on the underside, but not on top, you can drill the hole only part way through the material, and cut from the bottom. Good to see it's a common solution :. I have used both Square Carbide Bits and Bowl Bits and have had great success with them when flattening slabs. This is because of several design choices made by the manufacturer. How does a router work? You might find that there are links to router bits on Amazon since I think that most products are cheaper on Amazon and you can also take advantage of Prime. A bit is the cutting tool that is attached to the router and comes in hundreds of shapes and sizes.

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