A bit non-neander, but...
Like many, I'm working on a workbench, with 3/4" round holes intended. I'd figured on using a hand drill, as my drill press doesn't have the throat depth or spindle length to do all of the holes. A couple of weekends I was doing some mortising with a jet mortiser, and it occurred to me that of I set up a flat base and guides right, I could probably put a hss brad-point in the mortiser and use it to get good, straight holes. The math seems to work, with bit length, spindle run-out, etc.
If I set up a 3/4" index pin on a flat board to mount the mortiser to, I can probably get a real good spacing. I also figure a board underneath to cut back on spalling.
Thoughts?