The enclosures for both devices were designed in Fusion 360. The design is intentionally simple: two shells and a small insert, which together hold the electronics securely in place.

I wanted the cases to be not only functional but also practical for repeated use. Instead of using fragile plastic clips, the design relies on M2 screws to close the enclosure. To make this possible, M2 nuts are embedded during the print. The print is paused at just the right height, the nuts are inserted into the cavities, and then the print continues. This creates durable threads that can handle many assembly cycles.

The models are included in the GitHub repository and can be 3D-printed on any FDM printer. PLA works fine, but PETG is more robust if you expect frequent handling.

This approach keeps the assembly straightforward: slide in the electronics, close the case with four screws, and the device is ready to use.