If it works, I'm probably going to convert a couple of 2 and 3" contact wheels I have into a 32" leather flat bed set up. Connect it to my reversible dc drive and see if it helps with the polishing of a few concave blades I have lying about. Got the idea from watching some of those old grinding videos. A series of different dia wheels and some very supple leather should do the trick. Course, this is all speculation till I try.
:-)