40 mm Fan for Raspberry Pi 3, 4 Model B or A
thingiverse
Update: 2019-10-25 Been running for a 13 days and everything is cool and silent. I decided to give the Noctua Fan a try, and it blew me away - literally! This fan blows cool air like nobody's business, and I'm impressed with its performance. It works seamlessly on all Raspberry Pi models except the Zero. The heatsinks I used are specifically designed for stepper motor drivers, but they work incredibly well for the Pi too. You'll also notice some screws in the mix - (2) M2.5 x 20mm for attaching the holder to the Pi, and (2) M3 x 10mm for securing the fan. I managed to print this entire thing without using any supports.
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