Rockler’s Box Joint router jig fits on any router table with a 3/4″ miter slot and can handle stock up to 3/4″ thick.
Making boxes instead of doors? Rockler Woodworking and Hardware’s Box Joint Jig fits on any router table with a 3/4″ miter slot, where you can attach one of the three indexing keys (they’re provided in sizes 1/4″, 3/8″ and 1/2″), plus a bit and sacrificial fence. After you’ve tightened the jig, the indexing key is both a spacer and a stabilizer for cutting box joint notches, while the stop dadoes in both grooves engage the sled shortly after the bit clears the cut. The Rockler Box Joint Jig works with stock up to 3/4″ thick and sells for $79.99 as of 2009.
