Using the accessories that come standard with all the Leigh Superjigs, 5/16" and 5/8" finger joints can be done easily.
The Metric Finger / Box Joint Template allows these strong and decorative joints to be created, and possibly more easily. This jig includes sizings of 3mm, 5mm, 6mm, 10mm and 12mm, adding to the 5/16" and 5/8" giving seven possible sizes of fingers.
An additional two sizes, 3/4" and 1", are easily routed by following a procedure in the User Guide.