Stone/glass/Marble CNC Engraving Machine with Auto Tool Changer 5.5kw water cooling spindle with ATC; Japan Yaskawa Servo ... Price! Stone/glass/Marble CNC Engraving Machine with Auto Tool Changer Application Materials :Artificial stone, Marble, Granite, Ceramic Tile, Tombstone, milestone ... requirements. Stone/glass/Marble CNC Engraving Machine with Auto Tool Changer