DIY: buffing machine
Hand sanding and buffing is hard work, takes a long time and doesn't look as good as machine buffed finish. So, for a little over $100 (not including motor, buffing wheels, compound and lumber) here's how I made one.
First, you need a motor. I had a table top band saw that wasn't cutting well at all anymore, but, the motor still worked, so, out it came. Stew Mac recommends a 3/4 horsepower, 1725 rpm, but the one I had is 1/3 horsepower and 1750 rpm and it seems to be working fine.
McMaster-Carr once again had nearly all the parts needed: 1" diameter threaded rod - 36" long, hex nuts, steel washers, motor pulley, axle pulley, pulley belt and bearings. Four 3/8" diameter - 3.5" long bolts with washers and nuts from the local hardware store, and buffing wheels from Stew Mac.
Slide the axle pulley and bearings in to place and thread the nuts on each end.
Make bearing mounts from two 2x6's - 12" long, screwed together with 3" screws, and drill 3/8" diameter holes for the bearings...
...and screw them to the edge of a piece of 3/4" x 24" x 24" plywood.
Slide the pulley belt on the axle pulley, then install the bearings to the mounts with the 3/8" diameter bolts.
Now install the washers and buffing wheels. Tighten the double nuts against themselves so they won't un-thread.
Install the motor pulley and locate the motor on the base. Be sure it will spin such that the buffing wheels are rotating clockwise when looking from the left side of the axle (so the buffing wheels pull things downward and smash on the ground rather than upward into your face).
Make the motor mounts a couple of 2x4's glued together on edge.
Screw them to the plywood (from the underside) and use some metal strapping and bicycle inner tube to hold it in place.
Now give it a spin!
I can't upload to the tube from here at work but, a short video (13.8 meg) can be downloaded from here:
Or, if someone would be so kind as to upload it for me, I'd be greatly appreciative!
I did a couple of tests on some scrap and it worked great! Way better than doing it by hand.
Great work as always Rob. Ingenuity is a mighty fine friend.
....now, if you could just find a place to store all those nifty machines.