MK3 Surround Shroud

thingiverse

After crunching some numbers, I discovered that the MK3 is equipped with a capped blower fan. Prusa cleverly limits its RPM to 4200, resulting in a CFM of about 3-4 cubic feet per minute - an alarmingly low output. In contrast, a 40mm Noctua fan boasts a CFM of around 12, which is roughly 3-4 times more potent. This significant disparity translates to a substantial lack of airflow, making the shroud less effective as the opening grows larger. Consequently, it's no surprise that cooling issues plague the MK3. Employing a shroud like this has the potential to amplify the low pressure and redirect the airflow directly at the filament in need of cooling. Theoretically, this should result in superior cooling performance, but I'm eager to conduct more thorough tests to confirm my hypothesis.