... screw 3.stepper motor 4.high precision High-accuracy engraving machine with ball screw ZK-1224Introduction: 1.the whole lathe bed is ... videos for training.2. More steady and strong equipped with cast iron machine bed.3. Can be controlled by computer, showing the ... .175mm,4mm,6mm,8mm,12.7mmControl system:NCSTUDIO or DSP(USB interface)Command:G code ,u00,mmg,plt,HPGLRunning circumstance temperature ...