This is a replacement case for the Ultra-Thin Readers that are ridiculously expensive and come with a 2mm plastic case that cracks in the first 5 minutes.

I made this one from PLA, 4mm thick, on normal 0.20.

I used a large paper clip for the hinge.

The corners have round inset pillars to hold thin neodymium magnets you can find at any hobby shop. (5mm round-2mm thick).

This is my very first "thing", I am sure I will get better at all of this.