Smooth Cards Case (Backpack proof)

A smooth closing cards case that survives being thrown around in a backpack.   It holds even though there is no snapping mechanism Trust me I tried ⬇ That case was thrown, slung and shaken around the living room for a solid 3 minutes with no signs of it opening.   Printing PLA .2mm layer height 20 % infill No Supports If you own a printer with mid to high tolerances I would go for the tighter one as that one also guarantees that the case will function after much wear. There is also an optional version with smooth corners (like the yellow one in the images).