I copy and pasted this post from Leatherwall, this is by Arrowmker
There is a major problem using a fence to cut your footing slots,. Unless it is dead nuts in the center of the foot you will get a wing that is larger then the other side. That will cause the foot to go on crooked when gluing.
Try this get a piece of 3/4-1" hardwood and mill a "V" trough down the center of it. now make a bandsaw cut down the bottom of the "V". lay that on the saw table and clamp. Lay your footing material in the "V" and cut the foot corned to corner. This will do two things 1. it will guide the foot straight down the foot and 2. I will not matter if the foots vary in size, they will still cut corner to corner., Also place a stop at the end of your jig so you stop cutting at the same place on each foot. Bob