[Jared]

Have a look on the second page at post #27. You can see the fixture I made to hold them so I could mill and drill both sides. I milled the flats on all the parts first and then drilled the holes so I wouldn't have to be swapping endmills and drill bits twice every part. This way all you have to do is remember your settings on your dials to come back to for repeatability. When you mill the flats lock the Z-axis and don't move it so each shaft is at the same height when you bolt them to the side frame.