Re-drilling bolt circle holes is, apparently no fun using custom 1 inch drill bit. Not a lot of height above wheel face to bridgeport-like mill.
A few years ago, my neighbour and Rim Repair shop owner asked if I could mill the bolt circle hole and "while I'm at it" machine
a tapered seat so new inserts could be pressed in.
Knowing nothing about wheels, I wrote him some code in 'G-code' that he had no chance of editing. So here's what I came up with
after a very long time.