Cetus 3D 60mm fan mount with gate for filament cooling regulation

This is my attempt at creating a custom mount for a 60 mm fan (eg. Noctua NF-A6x25 5V) with the possibility of tuning the airflow to the nozzle for filament cooling.

It is composed by an "IN block" an "OUT block" and a "gate". The gate is inserted in the out-block (a bit of sanding may be required), then the out and the in blocks are glued together, the alignment is made straightforward by centering holes.

The in-block splits the flow in three, to the top, central and bottom part of the ex