This is a simple enclosure for the Bitfixer PETdisk v1 (a SD card floppy emulator for the Commodore PET series). I've never been able to find one online, so I made this on TinkerCAD (my first build). Don't expect much, it is just a simple box to protect the circuit board and SD Card adapter, with holes for the ports and to access the DIP switches. The two parts fit tightly together, but you may wish to glue them. There's a name plate for it that can also be glued to the top of the case. All three parts print from the same STL file.
I made mine using a Neptune 3 Max, in PLA and using a 0.4mm nozzle and a 0.15mm layer height. No supports needed and it should take around 50 minutes for all pieces at once.
I hope somebody finds it useful.