Straight-Up Drill Guide - To bore a perfectly perpendicular hole, you need either a drill press or a couple of scraps of wood screwed together. The corner created by the scraps will steer the bit straight in every time. But if you’re looking for an excuse
Circular Saw Crosscut Guide. by setting this up with an open bottom of box, it could be used to used on "planning to thickness" of even large odd shape pieces. mount these to base with wedges to not screw into your finished work.