3D printers; 3D printing pens; Extrusion machines for plastic; Extrusion moulding machines; Hot adhesive guns; Hot melt glue guns; Laser engraving machines; Laser engraving machines for woodworking; Machines for plastics working; Machines for processing plastics; Print heads for 3D printers; Printheads for 3D printers; Three dimensional (3D) printers; Typecasting machines