Improving Creality Ender 3 V2 PSU cooling

For some reason designers of Creality Ender 3 V2 3D printer decided to make power supply unit (PSU) for it by slapping together two metal housings that don’t have overlapping holes, instead, the holes almost perfectly align in such a way that they block almost maximum possible amount of airflow into the PSU.

Spot the problem? So, I’ve decided to change that. But since my metal work skills are basic, I’d just cut away the middle part of the black shroud. But that would still be blocking large part of the airflow. So I asked my dad for help and with some of his metal working magic, this is the improved PSU fan intake now…

Spot the difference? Look, you can actually see the fan now! Now, the fan is still audible, but at least it’s not beating same air around trying to get it through those narrow gaps in metal that were there originally.

Next step is replacing that 40mm fan on motherboard that’s just 10mm thick with another 40mm fan with 20mm thickness. Should spin much slower while moving a lot of air. But that’s for another time…

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