... .ball screw 3.stepper motor 4.high precision Engraving machine for Crafts gifts processing ZK-1224Introduction: 1.the whole lathe ... , milling dust, rotary axis for cylindrical materials, DSP offline control system, when working no need the computerApplication:wood working, furniture ... omly use this handle)Rotary axis the forth axis in this machine, (and using this could engraving the circular materials ...