Easy Angled Tenons
Router jig simplifies complex chair joinery
With narrow parts, angled legs, and lots of stress, the joints that hold a chair together have a big job to do. Jeff Miller suggests making angled tenons and straight mortises, which is easier to tackle than the other way around. Since the mortise is square to the workpiece, you can cut it as you normally do. For the angled tenon, a router jig makes the job easier. A sturdy support and a sliding template are the keys to the jig’s success.
Chair joinery is a challenge. Many of the joints are angled, and all of them are subjected to powerful stresses when the chair is in use. To contend with these issues, I almost always choose the mortise-and-tenon joint. If the joints are angled, I prefer to cut straight mortises and then angle the tenons.
The tricky part is cutting the angled tenons. But the jig presented here,…