... :metal, glass, wood, marble ,plastic, acryl, etc CNC ENGRAVING MACHINE CE AUTHORIZED PRODUCTS! Parameters: Model QX-4040(400x400mm)Spindle motor ... codeBall screw Two-nut rolling ball screws from Germany Resolution 0. 01mmHigh Speed synchronization of processing curves and straight lines ... , embossment, Home and Business Decorations, Gardening decorations Wall decorations Mini cnc router machine QX-4040