Raspberry Pi 4 case for laptop fan (no screws required)

thingiverse

Snap case for raspberry pi 4 with housing and duct for HP laptop fan. I had a spare laptop cooling fan and decided to design case for my rpi4. These fans are better at cooling than straight fans connected to 3.3V, but they are also a bit bigger, that's why this case is wider than usual raspberry cases. I used HP 7j1740 fan and cut its screw slots to reduce its size. It has 70mm diameter, 64mm length, 9.5mm height. So this case might not fit every laptop fan. Print in 0.20mm layer height and 0.35 width @ 200C. Tolerances are low, so any deviation might cause clips to not snap properly. They are designed for tight fit, so for snap they require to apply some moderate strength, but this guarantees their secure fit. Small support required for fan duct in top part if you printer poorly handles 40mm overhangs.