4/2/2022 - I made the closing pin a little thicker. It would sometimes break off easily. I also recommend 3 shell layers. If the latch is too tight sand or file a little bit on the pin.

A credit card size folding holder for 8 SD memory cards. Prints in one piece, no assembly required. Here is a video of it: https://youtu.be/Xzszs3V_TVA

Note: You must orient the print correctly in your slicer before printing. The flat side must be down. I created the STL upside down. I'll fix it eventually!

I made some improvements to the hinge that should print better on some printers.