Remote fan mount for E3D Hotend

These parts allow you to use a 19mm ID hose (like from a CPAP) to route air to a E3D v5 or v6 hotend from a remote 40mm fan.
Designed for use in an enclosed printer.

Update. After putting the first version together and testing it, I made several changes to improve the airflow. Finally, I decided to see if I could turn the axial 40mm fan into a centrifugal fan. I cut the fan out of the housing and installed it in the new fan base I designed. The
second version flows significantly mor