40mm Fan turbine cover with Dust Filter

thingiverse

This is a custom cover designed specifically for 40mm fans, boasting a unique turbine-like shape that keeps its width in line with standard fan dimensions. This means users won't have to make any adjustments when installing it on devices like the Hero Me fan duct, where space is at a premium. The design also comes equipped with a handy spacer, allowing you to incorporate a dust filter for improved cleanliness. By doing so, you'll prevent a massive amount of dust from being blown onto your hotend and heatsink. Cleaning the filter is simple - just sandwich a piece of mosquito net between the cover and the spacer. Ideally, though, use something with finer holes and smaller mesh for better performance. If you'd rather not include a filter, simply print the turbine part without the spacer. Keep in mind that longer screws will be needed; I'm using M3x20.