... laser engraving machine HR-6040Applicable materials: Acrylic, crystal, glass, ceramic, marble, granite, metal coating, cloth, fabric, wood etc. cotton material, ... , USB Port, Red light pointer, AutofocusApplicable materialAcrylic, crystal, glass, ceramic, marble, metal coating, cloth, fabric, wood etc. Main parts ... and reflector laser tube up-down worktable 6040 granite stone laser engraving machine