Raspberry Pi case - swappable lids (3 Model B/Β+)

UPDATE 11/09: Added new top part version, with swappable lids.
Simple vented, can open up to remove or place ribbon cables on the Pi.
30x30 fan mount, 40x40 fan mount.
Mount the fans by regular M3/M4 bolts/nuts, depending on your fan size.
I suggest printing the lids in PETG, to give a bit of flex in order to be able to clip them in and out of place.

Yet another Rpi 3 case. I made it while designing my printer enclosure.
I needed a freestanding case, that didn't need require extra stuf to stay upright, while leaving all the necessary ports open, and with minimal extra hardware.
All ports are exposed, besides the screen CSI connector. You could possibly use the camera one on the bottom to pass both ribbons on the outside.