Just got my raspberry pi zero 2w and wanted to create a housing for it that was willing to support my noctua fan, a 40x10 quiet fan in order to insure cooling. My small machine is used to run a 3d printer software host called Mainsail, so it gets utilized quite well, another reason i needed this upgrade…

15% any infill (I used cubic)

petg is better at dealing with heat, i recommend it

2 walls, anything more is overkill

Enjoy!!