... , granite, sandstone, terrazzo (water stone), gypsum, etc. Features: 1. X,Y axis are specially protected by complete dust-prevent set up to ... the high stability.3. Equip large power stepping drive motor; X, Y, Z axes chosen Taiwan imported 25mm straight moving rails ... . It can clearly engrave the 1mm small word.5. Z axis adopts Taiwan TBI original coarse pitch precise rubbing screw rod ...