1U Rack Pi4 Insert With Fan

Check out 3D model previews

Enables mounting a 40mm fan on top of the Pi4 to in 1U rack to keep it cool. Fan is horizontal to clear the standard rack insert slot, but also tilted backwards to minimize bouncing air all over the place and promote air movement front to back. The shroud is designed to take the cool air through the insert cutouts, drag it across components that like to heat up and finally through the CPU heatsink before exhausting it up and backwards.

Printing

Please slice the STP file yourself for best slicing quality on your specific printer.
Included 3mf files can be used as reference.
I've printed it out of HTPRO PLA with 0.4 nozzle at 0.2 layer height on a Prusa Mini with input shaper and it came out perfectly. I've kept the tolerances relatively loose so it should work just fine on a 0.6 nozzle with 0.35 layer height.

Mounting instructions

You'll want to use ~M3x8 screws to attach the shroud and ~M3x12 to attach the fan. Threads are not modeled so you'll want to either tap them or use metal screws to cut into the plastic. I didn't see any need to use the front 2 holes on the Raspberry Pi at all because the insert, Raspberry Pi and shroud are quite snug with just two rear screws.

Contributing and Remixing

Buy me a coffee

You can find the source FCStd file (FreeCAD 0.22) and STP files which can be opened using most CAD software.
To contribute, please fork my GitLab project and open a merge request.

License and acknowledgement

Robert (@Robert_28442 at Printables) designed the original Raspberry Pi 4 insert for 1U 19' rack and his work is under Creative Commons - Attribution - ShareAlike - NonCommercial license.

Hasanain Shuja published the Raspberry Pi 4 model on GrabCAD.

I just added an extension, fan shroud and a few ventilation holes. 

This project is licensed under the terms of the Creative Commons - Attribution - ShareAlike license in order to comply with Robert's.
As far as my work on it is concerned, you can do whatever you want with it as long as you give credit to Robert.

• Extended Pi4 insert to support full length of Raspberry Pi4
• Designed a 40mm fan mount and matching shroud
• Added air intake cutouts