An improved and refined version of the original design by Chaz. I used the 360° part cooler duct by 8jack as a reference for better tolerances and making it easier to print the duct. I also added a bump to “lock” it into place via the fan and slightly refined the inner surface with fillets.
This is to be printed at a 45° angle. Print this out of ASA, ABS or whatever heat resistant filament you can. It's good to print as is without supports. You could add one for the area where the duct splits as shown in the third picture but it is not needed IMO.
The author remixed this model.
Remixed the original design by Chaz using the design by 8jack as a reference for better tolerances and improved printing. Slightly refined the inner surface with fillets.