i added a blower fan exclusively for the motor drivers and used the original fan for the rest of the motherboard.
printed with eSUN PLA+ (yep i know pink :-) the blower is connected via snap-ins. the original fan is connected via screws (can be connected via several types)
print setup:
no support needed
2 walls
0.2 layer
non printed parts:
the blower fan of course 5015 24v
2x M3 20mm screw (for original fan - you can use other types)
2x M3 nuts (for original fan - you can use other types)
2x M3 8mm screw (to replace the original mount screws)
really optional - i created 2 sockets for the 2 fans and 1 cord to the motherboard - you can fuse them together to the same socket or do what i did
results:
cooling - in stall mode
without cooling 43C
with cooling 30C
noise really depends on the fan that you will use. i didn't had an noticeable increase in noise