[lerman]

Consider doing a bunch at a time. Take a long length of stock. Drill the small holes, turn it, drill the large holes, face the bearing seats.

You now have a piece of stock with all of the holes for ten or twenty parts. Now rotate the stock so you can do the "bottom" -- I think of that as the part where the large holes are perpendicular to a flat with "wings" going up. Do all of the parts. Also, do the top, but keep the parts connected by a strong pridge.

Now you should be able to place the parts on a fixture consisting of ten vertical pins. Clamp them down and do both sides.

Turn the fixture sideways now and carefully mill off the "bridges".

Ken