... protect the tool effectively while processing all kinds of stone. 3.Automatic oil supplier makes the maintenance operation easily. 4.Dust ... . Application:3D/2D engraving,Embossment,Line engraving ,Cutting,Edge inversing,Drilling on Natural stones,Granites,Artifical stones,Tombstones,Milestones,Ceramic,Glass ... gear of X,Y axis Ball screw of Z axis. cnc glass engraver engraving machine for stone marble