Nathan, just an idea, but have you ever thought of making matching sanding blocks for your radius platens? Maybe out of aluminum or micarta since they wouldn't need to be hardened. I hand sand all of my blades, (mainly because i just can't get an even belt finish but i keep trying) and a block with the correct radius would be nice to have. I'll end up making one out of oak or something to finish the blade I'm working on now. Anyway, just a thought.
randy
Guess what showed up today???? Got to get a knife forged to try it out. Thanks Nathan