Micro SD-card magazine

I redesigned the Micro SD card holder from https://www.thingiverse.com/thing:2932245 in order to print the housing without supports in a vertical manner. The inserts for the cards are not modified and still the original ones.

Modifications are:
- chamfered overhang at the bearing axis of the housing instead of a circular overhang
- printed with min. 3 walls, so the side walls are full material in the end
- model without logo in order to get a nice and smooth (and faster) printing of the side walls.

I printed mine with PLA on a PRUSA Mk3s and the cards were fitting extremely well.