The design is intended to have easily swap-able cooling ducts so better duct designs can be installed in the future.
The design is for the CHC Pro hotend.
Recommend using a WS7040 fan with this enclosure: https://www.printables.com/model/751151-ws7040-cpap-fan-enclosure
toolhead_gates.stl has belt spacing for use with the Gates version of https://www.printables.com/model/781510-the-100-rigid-gantry. If using the non-Gates version of the rigid gantry or the The 100 v1.1 gantry use toolhead.stl instead.
Requires m3 heat inserts for the hotend clamp, a 4010 cooling fan, screws to screw the clamp to the toolhead, and screws to screw the fan into the plastic frame.
The author remixed this model.
Significant weight reduction and move to CPAP cooling.