... 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 ... mainly used for metal, such as aluminium, copper, stainless steel, steel, alloy, etc.9.Also can for wood, MDF, ...