Micro-Adjustable Tenon Jig
Precise positioning permits you to rout a tenon in less than a minute
Synopsis: Router expert Patrick Warner made a tenoning jig that will accommodate a wide range of sizes. He says it’s not sophisticated, but with a slight adjustment, he can dial in tenons to within 0.001 in. and cut 2-in.-long tenons in under a minute. His jig will only cut two-faced tenons or four-faced tenons on narrow stock, but he explains how to cut them on wider boards. A detailed drawing illustrates the parts of the jig, and Warner explains how to make one. Then he shows how to make tenons with it.
Most of the furniture making I do is experimental. Nothing in the design is standard. Consequently, when making tenons for joinery, I want a jig that will accommodate a wide range of sizes. Some adjustable woodworking jigs use the tap-and-clamp method. That works, but it’s simply not very handy when you’re making lots of different-sized tenons.