Well, to be totally honest with you all, my reamer is one of those T-bar types and is not designed to fit in the drill press, if I even had a drill press. It has successfully reamed out...by hand... perhaps 50+ props for me over the past several years, and not a darned one acted up or was out of balance, or off center (as far as I know) in any way. The way I test them is to ream them out to the proper size, mount them on the engine and fly the plane.

CGr