I'm a member of another forum called 'MetalMeet". The latest way of powering a bead roller over there is using one of Harbor Freight's pipe threaders for power. Think it even comes with the foot switch already. Are you using a ready made roller or are you making one from scratch? The ready made ones using a flat plate for the frame. have to be reinforced, especially when powering them. Or they 'skew' sideways and the rollers are no longer inline, they actually twist the frame.