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 a [40mm 5v Noctua Fan](https://amzn.to/2MdxFG1) a try. Wow this things blows! Blows cool air that is. This fan works for all models or Raspberry Pi except Zero The [heatsinks](https://amzn.to/2MzBMLo) I used are designed for stepper motor drivers and work quite well for the Pi. You are also going to seen some screws as well. (2) M2.5 x 20mm (for holder to Pi) (2) M3 x 10mm (for fan) I was able to print this thing without supports.
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