Anycubic i3 Mega stepper driver fan duct with chipset vent

thingiverse

This is a remix of roundisfunny's air duct for Noctua NF-A4x10 FLX 40mm fan. The Noctua NF-A4x20 FLX will also work and provide more airflow and be a bit quieter. I have redesigned the original fan duct (https://www.thingiverse.com/thing:2878826) with more radii for better airflow and added an end piece with a vent. The air will then not directly exit the housing after the stepper drivers have been cooled but instead will be redirected to the board and chipset that would not be cooled with the original. I have also made it a bit slimmer in height at the end in order to make assembly easier. Supports are not needed as the internal structure has two flaps inside. It's a bit tight to be fitted in the housing, removing the power supply before installation will help