Also known as a spline jig. This is to replace a jig that fit my old Unisaw. Instead of runners attached to a bottom plate I had the idea (probably not original) to use the 45 degree supports for the runners too. I attached the 45's to a straight piece with biscuits then trimmed it on the tablesaw so the bottom of the V was slightly above the table top. I added boards to the front, back, and top (trimmed to 45 to match the cradle) to act as a blade guard. The runner/supports are 3/4" plywood and the rest is 1/2".