Our Corner/Edge Drilling fixture, coupled with a dedicated bench drill press. A simple drill press ca be purchased. Set it up permanent for just his purpose. Edge/corner settings are 1/4', 3/8", 1/2", 5/8", 3/4", 3/4", 7/8", 1", and 1-1/8". Accomplish 1/16" increments very easy with 1/16" thick insert-see pictures. And the ability to stack parts up to 3/4" thick.,