Hey Doc -- Welcome to HomemadeTools.net

Be sure to check out the Homemade Engine Test Stands category if you haven't already. Also, John Niolon has a great engine stand build; not a "test stand" per se, but still a great resource: John Niolon's Engine Stand.

Also see these tags: powder coating, disc sander.

I'm going to poke around to see what we have for a metal buffer build.