... contol box is with a big power supply & high subdivision stepper motor driver & pc board of controller,Convincing arguments: quality, efficiency and priceThe ... . It has three 23 high speed stepper motor for X, Y , Z axis . The 23 stepper motor are smartly installed in the top of ... to influence the installation of the back shell. All the stepper mounts, ball screw mounts are made of steel, by wire ...