Narrow angle hot end for three dimensional (3D) printer

An extruder for a Fused Filament Fabrication (FFF) three dimensional (3D) printer comprising:

• a heat sink;
• a thermal barrier coupled with the heat sink;
• a heater coupled with the thermal barrier;
• a temperature sensor coupled with the heater;
• an FFF material delivery channel;
• a motor to drive FFF filament into the FFF material delivery channel;
• a nozzle coupled with the FFF material delivery channel and with the heater, the nozzle having a total included angle of less than or equal to sixty degrees and greater than or equal to ten degrees, with respect to a nozzle target point;
• and
• a cooling delivery system for at least the heat sink;
• wherein the heat sink, the heater, the temperature sensor, the FFF material delivery channel, the nozzle, and the cooling delivery system are all contained within a volume defined by the total included angle with respect to the nozzle target point.

A Fused Filament Fabrication (FFF) three dimensional (3D) printer comprising:

• a build platform;
• a 3D printer motion system;
• a carriage coupled with the 3D printer motion system;
• and
• a hot end coupled with the carriage;
• wherein the hot end comprises a heater, a temperature sensor coupled with the heater, an FFF material delivery channel, a heat sink coupled with the FFF material delivery channel, a nozzle coupled with the FFF material delivery channel and with the heater, and a cooling delivery system for at least the heat sink;
• wherein the nozzle has a total included angle of less than or equal to sixty degrees and greater than or equal to ten degrees, with respect to a nozzle target point;
• and
• wherein the heat sink, the heater, the temperature sensor, the FFF material delivery channel, the nozzle, and the cooling delivery system are all contained within a volume defined by the total included angle with respect to the nozzle target point.