A three-dimensional (3D) drawing device having a housing configured for manipulation by a user's hand and to accept a feed stock that is, in certain embodiments, a strand of thermoplastic. The drawing device has a nozzle assembly with an exit nozzle and a motor connected to a gear train that engages the strand of thermoplastic feed stock such that rotation of the motor causes the feed stock to be extruded out of the exit nozzle to form a three-dimensional object.

A molten gold writing apparatus that includes a barrel extending from a top end to an open bottom end. A heating element is positioned within the barrel and includes a rechargeable battery. A cartridge includes a refillable chamber configured to hold a solid gold refill and dimensioned to fit within the heating element. The heating element melts the gold refill and allows it to flow to a tip end of the cartridge. A grip is configured to selectively engage the bottom end of the barrel to cover all but the tip end of the cartridge.

A three-dimensional (3D) drawing pen can include a housing that has a port that permits insertion of a strand of material into the housing, an actuator for controlling a movement of the strand, and a nozzle assembly configured to permit the strand to be extruded out of the 3D drawing pen in a form that retains its shape against gravity in free space to draw a 3D object.

A three-dimensional (3D) drawing pen can include a housing that has a port that permits insertion of a strand of material into the housing, an actuator for controlling a movement of the strand, and a nozzle assembly configured to permit the strand to be extruded out of the 3D drawing pen in a form that retains its shape against gravity in free space to draw a 3D object.

An apparatus including a three-dimensional (3D) drawing pen can permit a user to draw in free space to form a 3D object. The 3D drawing pen can include a housing, an actuator, and a nozzle assembly. The housing is configured to receive material therein and fit in a user's hand. The actuator is coupled to the housing and is configured to control a movement of the material. The nozzle assembly is configured to permit the material to be extruded to permit the user to form the three-dimensional object.

A glue gun, comprising: a housing for storing strands including thermoplastic plastic, a heating device, an outlet nozzle for discharging heated strands from the glue gun, an extrusion unit for shaping extruded strand, a conveying device for conveying strands to the heating device and through the outlet nozzle. Embodiments of the disclosure make it possible to store glue in the glue gun even in large amounts and to join the parts to each other with a strand of fiber-reinforced plastic with adhesive bonds in such a way that the adhesive bonds can withstand even large forces. Various glue guns of the disclosure include a pultrusion unit for consolidating fibers and plastic.

A fitting tube structure of a glue gun contains: a conical connection part, an accommodation chamber, a feeding segment, and an open segment. The fitting assembly includes a first fixing tube, an O ring, a second fixing tube, a stop sleeve, a locating ring, and a coupling tube. The first fixing tube has a stepped portion. The O ring is retained between the stepped portion and the second fixing tube. The stop sleeve is fitted on the first fixing tube and has a large-diameter extension and a small-diameter extension, and the large-diameter extension covers the first fixing tube and is fitted on the large-diameter extension by using the locating ring. The coupling tube is fixed on the small-diameter extension. Furthermore, the first fixing tube, the second fixing tube, and the stop sleeve are fitted and are fixed by the locating ring and the coupling tube.

A waxing apparatus including a dispenser having a compartment for holding wax and a tip having an aperture for dispensing wax on a user skin, the tip including a gradually decreasing cross section in the direction towards the aperture; and a heating element mounted over the compartment and over the tip and configured such that temperature inside the tip is higher than temperature inside the compartment.

A hot melt adhesive applicator with one or more air outlets configured to direct a pressurized heated air stream transversely toward hot melt adhesive discharged through a discharge port of the applicator. A controller can switch between two modes, a discharge completion mode where the heated air stream pressure is temporarily increased to automatically eliminate or reduce hot melt adhesive stringing and an application mode where the heated air stream assists in heating or maintaining the hot melt adhesive at or above melt temperature.

A molten gold writing apparatus is disclosed. The molten gold writing apparatus includes a barrel extending from a top end to an open bottom end. A heating element is positioned within the barrel and includes a rechargeable battery. A cartridge includes a refillable chamber configured to hold a solid gold refill and dimensioned to fit within the heating element. The heating element melts the gold refill and allows it to flow to a tip end of the cartridge. A grip is configured to selectively engage the bottom end of the barrel to cover all but the tip end of the cartridge.