Chuck, on the Grizzly edge sanders the drive drums are barrel shaped and there is no flat surfaces. I assume all other edge sanders have a barrel shaped drive drum too. The friction and heat from a spinning drum would be rough on the jigs. The jigs I have been using with my robo sander are plywood..I will be using corian, lexan, aluminum plate or something like that for the bottom of my new jigs, plywood alone may not be hard enough. There is a cabinet shop near my house and I need to see what they have in the scrap pile.