Ender 3 PSU Fan Cover

thingiverse

I wanted to see if reducing fan noise from the PSU would make a difference. So far, it appears to direct airflow in a way that makes it seem quieter to me. This experiment was inspired by Godspeeeeed's fan cover, but I created my own design without referencing his work directly. I used a fresh approach, designing everything from scratch with no direct reference to Godspeeeed's creation. However, I was impressed by the magnets on the steel fan screws of the aluminium case in his design - that was pure genius! I took inspiration from it and incorporated it into my own design. My goal was to create smooth airflow without disrupting fluid dynamics or aerodynamics. To achieve this, I provided a large cross-sectional area with no obstructions and rounded all inner corners to minimize turbulence. Initially, I intended for the fan to exhaust vertically upwards, as hot air rises. However, experimentation showed that pointing it downwards reduces noise more effectively - at least, it diverts sound away, making it seem quieter. It's either a successful noise-reducing design or a decorative piece with a satisfying placebo effect. You decide! Now, if I can figure out how to silence the hotend and parts cooling fans, I'll be in printing heaven! Happy Printing!