... screw 3.stepper motor 4.high precision Advertising engraving machine with best/factory price ZK-1224Introduction: 1.the whole lathe bed is ... for training.2. More steady and strong equipped with cast iron machine bed.3. Can be controlled by computer, showing ... kinds of metal and nonmetal materials, such as wood/MDF, PVC plastic, plexiglass, acrylic, organic glass, marble, granite, aluminium, copper ...