This card box is designed for UNO cards up to 56,5 × 87,5 mm, with a maximum deck height of 34 mm. The cards are securely held in place by a locking lid while remaining easy to access.

The lid uses a 3 × 35 mm dowel pin, which should be carefully press-fitted or gently tapped in with a hammer. Filaments with poor layer adhesion may split during assembly, so caution is advised. PLA Basic has been tested successfully.

The latch is inserted into the slot in the lid. Depending on print quality, a small amount of sanding may be needed for a smooth fit.
Because the pin is slightly shorter than the width of the lid, it should be pressed in from the center using a smaller pin or a screw. This prevents it from sticking out on one side. This is purely cosmetic and does not affect functionality.