Enclosure for the following DC/DC converter board: link (not affiliate link). Both the “normal” and the captive nut version should print OK without support (hole for hex nut uses bridges).

I made it because I wanted to have 24V available from the cigarette charger in my car.

Instruction for captive nut version:

• the 3mf file is programmed to pause at the right time and you should gently insert the M3 nuts before hitting continue
• once the print is done you can use M3x25 (non-recessed) screws to keep the two halves together