Ender 3 coolend fan duct
thingiverse
This is a fan duct I designed to optimize the air flow around the cool end of the extruder. It can be mounted using the standard screws for the fan. It is carefully designed to fit snugly into the extruder assembly. It features three holes and a slot for the screws, to easy assembly in the corner where the duct overlaps the screw hole. I printed it in PETG to assure a better heat resistance, althought, as the duct does not touch the extruder and is colled by the air flowing through it, PLA should also be possible. Print with supports enabled.
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