... ball screw 3.stepper motor 4.high precision Engraving machine for Crafts gifts processing ZK-1224Introduction: 1.the whole ... plastic, plexiglass, acrylic, organic glass, marble, granite, aluminium, copper, steel and many other material.Specification: Model:ZK-1224Machine body ... we could make the machine according to your own idea.For more informations of our products, please feel free to contact me. ...