... Sale! High Quality! Factory Price! Stone/glass/Marble CNC Engraving Machine with Auto Tool Changer Application Materials :Artificial ... Slate, grindstone ,Jade, crystal, plexiglass, aluminum composite panel, aluminum block, copper, wood, MDF, hardwood, plywood and so on. Application ... SizeBT30TransmissionX,Y Axis High Precision Rack Gears, Z Axis Ball ScrewX,Y,Z Guide railHIWIN Linear Square Rail from ...