Buffing machine is my next upgrade. I've looked at the Stewmac unit & just can't throw down that kinda money on what's there. I have an old 1 phase motor that I can rig up & have figured out my pulley diameters. I thought I'd leave it to our Ingenius bunch to throw out some ideas. I have a lot of them floating around but maybe you've built something better? I'd like to see what you've come up with. ?