3Dator extruder with cooling duct

thingiverse

I'm really excited about this improved extruder design and decided to make some key enhancements. The original design can push filament with incredible force, but it requires the stepper motor to be driven with high current levels. Higher currents mean that the motor heats up rapidly, causing heat to dissipate throughout the entire motor assembly, including the axle and MK8 wheel. This eventually leads to softer and deformed filament, resulting in feeding failure issues. To address this challenge, I've added a cooling duct and rear fan mount, which ensures that the motor remains at room temperature or slightly above. The 40x40 mm fan should be oriented so that it pulls air out of the duct through the grilles on each side of the duct. I've also included a standoff mount for additional support. The original part is available online at [www.thingiverse.com/thing:1679553], courtesy of designer [50koruny](https://www.thingiverse.com/50koruny/about). The missing parts for the extruder front are identical to the original design. Design files for Fusion 360 are included in this package.