High speed extrusion 3D printer nozzle

A nozzle for receiving and dispensing a 3D printer filament, the nozzle comprising:

• a barrel having an internal bore and an exterior surface, wherein the internal bore has a filament receiving end and a filament discharge end, and wherein a channel is defined in the exterior surface of the barrel, and wherein the filament receiving end of the barrel defines two opposing peaks and two opposing valleys;
• a heat break defined in the exterior surface of the barrel, wherein the heat break reduces the transfer of heat along the barrel;
• a heating element proximate the filament discharge end, wherein the heating element includes a heating wire wrapped around the exterior surface of the barrel;
• and
• a plurality of temperature sensors attached to the exterior surface of the barrel, wherein the plurality of temperature sensors are positioned within the channel of the barrel;
• and
• an end tip proximate the filament discharge end, and wherein the 3D printer filament is received in the filament receiving end is heated by the heating element and dispensed through a discharge orifice in the end tip.