I made mine as a detail wheel set for my 2x72 grinder. It runs at full speed and power and tubes could be swallowed whole. I just freehand on it, since not two builds are ever the same. The first step is to get the tube floating on the turning belt. I then bump it, and make corrections for tilt or centering. Once I have it running true I just feed it in. It is pretty easy compared to this (around 5 minutes):

http://www.youtube.com/watch?v=kvlKfzW12d0

I have to grind some broadheads for a guy, so I may get a pic today.