Adjustable Jig Makes Big and Small Fingers
A typical finger-joint jig is an auxiliary fence screwed to the face of the miter gauge with a wooden registration pin sticking out at the bottom of the fence. The fence is moved back and forth by trial and error until the pin is positioned so that the finger and slot widths are identical. Unfortunately, adjusting this kind of jig is tedious, and you need dedicated jigs for different-size finger joints.
This finger-joint jig solves these problems. It features both a gross adjustment and a fine adjustment to produce finger joints in a range of sizes, from 1/4 in. to 1/2 in. The jig consists of a fence attached to the miter gauge face by slotted holes; this is the gross adjustment.
Fine adjustment comes via the metal reference pin (a standard hardware-store spring pin), which is mounted on a pivoting metal arm that’s fastened to the back of the fence with…