Three-dimensional printers, namely, electric plastic extrusion instruments for creating objects via melting, cooling, solidifying and extruding plastic; three-dimensional printers, namely, electric extrusion instruments for creating objects via melting, cooling, solidifying and extruding edible substances; holders for three-dimensional printers, namely, stands for holding 3D printing pens; specially fitted platforms for three-dimensional printers; Fans, unblocking rods, wrenches, and warming ...