What is the best way to make a bolt hole circle/pattern on a small hub (~2" diameter) with only a drill press? Mainly, I need the most accurate way of marking it. The only thing I've come up with so far is drawing it out in CAD with center marks then printing it 1:1 scale to glue/tape to the part, then center punch on the center marks.
I'd like 3 or 4 holes at 120 degree or 90 degree intervals respectively. The material is 6061 aluminum.
Any other ideas?
There is dikem and scribing but I don't know how I'd scribe the circle or get the angular spacing right.