Operating Instructions: Put the workpiece in the clamp, fixed it manually or automatically. Press the start button, the drilling unit to drill with multiple step; and then put another workpiece in another machine, fixed it manually, press the start button, the drilling unit to drill with multiple step. So each person can operate more than 2 or 3 sets machine. Purros Machinery Co.,Ltd. can customize all kinds of automated modular machine tools according to customer's products.