... card 4.linear round gui rail & ballscrew Multifunction 4 -axis CNC Engraving Machine ZK-6060 ApplicationsWood ,Metal, Stone,acrylic ,organic glass, jade ... desktop computer, can show the processing path.3. Cooling system for the metal, hard materials, avoiding breaking the cutters and ... piece. 4. 2.2kw water cooling spindle, more powerful.5. Power off and break point, continuing processing.6. Good ...