... 4.linear round gui rail & ballscrew 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 area 600*600mmMillling cutter 3 ... , MDF, acrylic, organic glass, PVC, double color board, stone, jade processing. Sample pictures