Prusa MK2 Better Part Cooling Fan Duct with support by tomasro

Last crawled date: 3 years, 1 month ago

I've been printing a lot with PETG which is what my hotend parts are made from, and this is causing the screws nearest the hotend to heat up. The screw closest to the hotend is actually for the part cooling fan, but because I'm printing PETG that doesn't use much cooling, it is starting to sag since it isn't cooling itself down natually and it has no counter support on the other side of the part (just an alignment pin). It was sagging to the point where it was 1-2mm from hitting the model I was printing, and causing extra stringing due to the mis-aimed air that was pointing at the nozzle instead of the part.
This part solves this problem by giving the part cooling fan an extra point of support that is far away from the hotend, and thus keeping the part cooling fan level and out of range from hitting your model.