Build a circle jig to cut perfect circles using your router.
Here are free downloadable woodworking plans for a shop-made jig to use on a band saw.
This is a link to a Google 3D SketchUp drawing for a jig saw circle jig which can cut circles up to 70 inches in diameter. You will need the SketchUp software to download this drawing and its freely available online. We do not provide support for this software.
This is a link to a Google 3D SketchUp drawing for creating a circle jig for a router using a 1/2 inch router bit and 1/8th inch increments. You will need the SketchUp software to download this drawing and its freely available online.
A table saw is not a tool you think of when it comes to cutting a workpiece into a circle. But with a shop-built circle cutting jig, cutting a circle up to 40 inches in diameter is quick, easy, and accurate. And it results in a surprisingly smooth, even edge. This 3-D SketchUp model is available to download in this Online Extra.