... Multifunction 4 -axis CNC Engraving Machine ZK-6060 ApplicationsWood ,Metal, Stone,acrylic ,organic glass, jade, emerald, jewelry engraving, 3D engraving.... Machine specifications X/Y-axis working ... , can show the processing path.3. Cooling system for the metal, hard materials, avoiding breaking the cutters and work piece. 4. 2 ...