extruder fan duct

thingiverse

I recommend using a 25mm extruder cooling fin for effective cooling, paired with a robust 30mm fan to maximize airflow. Printing the exhaust part may require extra care, as it can be a bit of a challenge; I achieved success by printing it at an angle and using support to ensure it printed straight up. Print Settings: Rafts: It's really not that crucial Supports: A definite yes is needed