I used a 1/8″ CNC end mill in the drill press. I wanted a flat bottom, not little divots like what you get with a drill. I started setting the depth with the new caliper gauge I installed on the drill press, but after the 6 and 5 mm holes, I decided to use depth gauges instead for the remainder.
I also tried using a foot actuated operator for the drill press depth control, but that didn’t work very well. Holding the work-piece with my left hand and operatiing the drill press with my right is quite tedious. But over yesterday and today I got it done.