Is it steel Randy?

    Paul Lamar

   If I had a choice I'd vote for a tapered end mill.  I didn't bother
   to draw
   it and see what the taper was but I'm sure there is some options
   there, otherwise as was noted a ball end mill would do it as well
   [just take longer]

   Fwiw
   Jarrett


It's aluminum.  I can drill the center hole close then mount it in my
lathe to finish the hole with the taper.  I will remove the chuck and
mount it to a plate which will be easy to do with a few screws.  I just
have to pick up some stock now.

Randy