I needed a case to transport my business cards. The problem: Silly me wanted a non-standard card format, so no available design would fit…
You also ordered square cards: Your search for cases is over 😅
Use 1.75mm filament as hinge pin. Model holds square cards up to 65mm x 65mm.
I did one with two color printing with one extruder. Following the instruction on https://www.youtube.com/watch?v=0Sla-vIsvh4
Thanks to AlexMu for the nice original Design!
The author remixed this model.