iim not set on the smaller motors but as i have them now i may as well give them ago the machine does not have to work mega fast! its being made out of aluminium. ill give anything ago (within reason) if it works ok and saves abit of money! if not then ill have to go for some " muchas maracas ". that Z axis you got there gary looks a fair bit of kit what OD and pitch is that ball screw?