Workshop Tip: Miter box parts on the router table
Using this jig and a V-groove bit, you can cut miters accurately and to length.
Mitering parts for small boxes is trickier than it seems. You have to cut the angles precisely while cutting parts to uniform lengths. The best approach I’ve found is a router-table jig like this one. I team mine up with a 1-in.-dia., 90° V-groove bit, but any bit with a 45° cutting edge will work. Start by crosscutting all of the pieces to final length. Then adjust the height of the bit and the position of the router-table fence so the bit just reaches the top edge of the workpiece but no farther. This is so you don’t change the length. If anything, leave a tiny square edge at the tip of the miter; it will disappear after the box is assembled and sanded. For uniform results, push the jig and workpiece firmly against the router-table fence as you make the cut, working right to left. Then simply flip the workpiece to miter the other end.
—BRUCE DUDMAN, Hobart, Tasmania, Australia
Illustrations by Dan Thornton
From Fine Woodworking issue #288