This is remix of the Case for Raspberry Pi model 3 B+ , the USB ports and ethernet have been reversed, the full size HDMI has been replaced with 2 mini HDMI ports, and the micro USB has been changed to a USB-C port.

You can use the openscad file to add holes for the camera, for GIPO and sd card.

Its the only case I found that snaps perfectly and took in to account expanding of the filament due to the heat. Both ABS and PLA. However with the Pi4 you are likely to use ABS or PETG because PLA will warp at 40+C+ degrees which the Pi4 can reach.

To use download I suggest you use both top and bottom, since openscand adds a small shift to the fully assembled parts.