Yup, using a mid-50's Craftsman tabletop drill press. Ended up making a U shaped wood channel that I C-clamp to the drill press table as a positioning fixture. Once it is clamped in place I just slip the sabot in it and cut the recess. Haven't tried a router bit yet though. Makes sense to have a round bottom hole rather than a squared off one. Will have to search around a bit and see if I can find one of those bits. Thanks.