What is this for?

Sure fire upgrade from my original Einsey case which the hinges and case had broken. Plenty of room for the soon to come RP octoprint upgrade A+++ for design!!!
It is actually a great model and I love it to stuff everything needed directly into the case on the printer. However there are a few things which I do not like that much, now that everything is printed and installed:
- The buck converter needs to be attached with M3x8 screws and not M3x10 as instructed. You will break through the plastic otherwise.
- The flimsy cable holders on the top for X-axis and MMU broke right off, as some others noted as well.
- The cable hole for the MMU is too big, almost the same size as X-axis would be sufficient.
- The margin between the case lid and the X-axis motor is very tight. I have a cable holder frame on the X-axis motor which just adds 2 millimeter of width, but now the motor housing is colliding with the case lid and bends it. This is only for the lowest 5mm, but even without the frame its slightly touching.
I think those are things people should know or could be improved on the otherwise great design.
I *think* this would work with the Raspberry Pi 3A+ (though the USB port will be recessed), but how hard would it be to modify this to properly fit the 3A+?
Had to pop back over to add stars. This this works like a champ. Been on my printer for 1.5 years and haven't had any issues.
Fantastic! It was an absolute joy working with this. Great design, well thought out. My buck converter doesn't fit the mounting holes as I got the 5amp version but it still fits in the case.
My printed body does not look like these photos. Mine has almost the whole bottom open for cables. Also, if I mount the Pi 3B+ as in the photos the openings for USB & CAT cables are swapped. The Pi will not fit, I need to cut off the dividing bars. I'm also not sure how to wire the buck.
Everything fits well, I did buy the recommended buck converter, and it died in less than 24 hours, so I'm not so sure if that's just bad luck or what. I returned to my previous one from Micro Center and it's chugging along.
electrical noise causes problems with the printer and octoprint and the case dosent seem to be to designed so humans can assemble it
Is this compatible with a passive cooling case for the pi? Or do I need smaller heatsinks?