Hey Scott,
I've pondered doing the same thing myself, from time to time.
What if you started a fine abrasive sleeve like p/n 4657A34 from McMaster. You could set one pair vertically to do the sides of your material, and one pair horizontally down the way a little to do the top and bottom. If you mounted these to spring loaded arms then they could open or close to accomodate different sized stock. Finish could be adjusted by changing the abrasive type and the spring pressure.
As far as feeding goes, you could probably either push the part through by hand or use a pneumatic cylinder to push the tube. A set of drive rollers would work too - perhaps one set in front of the sanding sleeves and one on the other side. Kind of a push-pull arrangement.
I hope that helps some!
(Another) Scott |