... nice to control the machine .you can install the coolant system in the stand . because there is enough roomage ... : G-code to control the speed of spindle and coolant system . or use 4th axis . X, Y, Z ... enough power to hard work. For the NC control system, including CNC interface board, three stepper drivers, ... hand wheel has been. You can use it as coolant switch or FREE, or EMERGENCY STOP. At last ...