... face to face, the long time use precision is high.Hard Materials(stone, marble, granite etc) CNC Engraver Configuration:1. ... Whole steel structure, Bearing heavy, three axis imported square orbits,2. Imported ball screw, three axis dust proof, water ... :StepperApplied area: The machine mainly used in the engraving of hard materials such as solid wood, marble, granite, glass, stone ...