Hello :) For those brave enough to replace all FIVE fans, Here is my 40mm cooling part fan shroud. It’s my first iteration of it so will be improved over time but as it is it works very well ! The 40x20 fan attaches with 4 20mm M3 bolts. The Shroud atm attaches on to the side with either 3m tape or glue gun until I work out screw holes to fit. The file prints with No supports in two parts the tip is to be super glued on. This way prints the best with no messy supports to get out of the duct. Cooling performance is really good due to the internal shape.
DONT FORGET TO use 24-12v step down converters for the fans. There only a few pound and I wired mine inside the black housing where all the sensors/connectors plug into the breakout board near the z axis motor. The part cooling wire is yellow and blue( blue being ground). The heat sink fan is black and red.
Works so good! The only thing to change is maybe make the cooling tip less close to the bed and work out screw fittings to fit in place.
I printed this in PLAUP.