This is a Raspberry Pi case I designed to be a snap fit and still be able to be taken apart easily. It is designed to be printed in 2 parts. I designed it to have a button on the case for the power button. I still haven't figured that part out so if you're having trouble with it fitting, try to cut the button off. This was printed on my MK3.9 with stock settings and no support. The only settings I changed are the temps for the filament and infill I set to 10%. You will need to orient the parts to fit your printer correctly. I didn't design it top up so they are on the side when you upload them into the slicer. I have also included my prototypes.
Update 3/25/24
I have updated the button as well as added another snap to help the llid to not want to twist out of place. The button still isn't perfect, for me it snapped off.