Years ago, I purchased a Burst Nibbler cable and software for my Commodore 64.  This cable connected my 1541 disk drive to my C64 with a parallel connection so I could backup program disks quickly bit by bit.  It can also connect the 1541 disk drive though a ZoomFloppy device to a modern computer for use by a Commodore emulation application such as WinVice.  The connection to the C64 was a bare circuit board with a commodore user port connector and a pass-through card edge connection.  Seeing the bare circuit board always bothered me a little. I was a little worried it would get messed up. Also, I'm a bit OCD.  I searched around for a while and could not find a case for the circuit board.  It's not a widely owned object, so therefore, that was not surprising. 

After getting some experience with my 3D printer, I decided to give a shot at making my own case for the Burst Nibbler circuit board.  

I wanted to keep it as small as I could so I could still plug it in to the various ports it fit. I also wanted to try and make it friction fit so I wouldn't need any hardware to keep it closed.

So here is my first attempt.

My model successfully pressed together with a little effort allowing it to stay shut.

Depending on your print settings, if your holes come out too small, you may have to enlarge them slightly. For other projects in the past, I have used a drill bit of appropriate size, turning it in the hole by hand. 

I printed this case at a layer height of .16 mm with 20% infill.

I also used the Cura Slicer setting "Minimum Infill Area" equal to 25 square mm to make the mating posts print solid.

I was also careful to have the slicer gradually increase the fan speed from zero to a maximum of 50% for the first 4 layers to avoid any bottom layer shrinkage curling. 

I printed in PLA with no rafts or supports on an Ender-3 S1 Pro.

[UPDATE 02/20/2025]

I have added a version 2 that has clip tabs that snap together instead of the post and hole arrangement of the original. This should make a more positive connection.