Good call on the small wheel attachment! Very useful! If you got a flat platen, I would get a rubber coated 2" wheel to use on it as a small contact wheel instead of running 2 aluminum 2" idlers. I use a 2" and 6" rubber contact wheel on my combo platen for 95% of my handle shaping, and the small wheel with a 3/4" or 1" for the remainder! Hollow grind wheel is nice if you do it, but if you want a bigger contact wheel, look at Radius Platens instead, much less expensive! I got a 36" radius platen for $75 to do very shallow hollow grinds on kitchen knives and stuff. Getting a good large diameter 14" wheel is a few hundred!