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Eliminates softening and jamming of your filament due to heat produced by the extruder motors. I also added heatsinks to the top of my motors.

I had to print this with massive supports in the orientation it's already in. If anyone comes up with a better way let me know!

Much credit and love to Lemm, whose original Printrbot fan cover design:

I crudely hacked in order to make this part.