... Factory Price! Stone/glass/Marble CNC Engraving Machine with Auto Tool Changer Application Materials :Artificial stone, Marble, Granite, Ceramic Tile ... Slate, grindstone ,Jade, crystal, plexiglass, aluminum composite panel, aluminum block, copper, wood, MDF, hardwood, plywood and so on. Application ... have features of easy maintenance.4.Linear type Auto tool changers can hold 6 or 8 cutting tools and ...