DESCRIPTION:
This is a modular SD card storage system that can be printed to store a number of cards suiting your needs. I prefer to have 7 cards per cube, (it is not excactly a cube, more of a a rectangular box shape) but you can storage to hold up to 20 or more SD cards per cube. The system has individual locking mechanism for each SD card to prevent it from falling out eccidentally. The Locking mechanism also doubles up as lever to eject cards seperately.

The system is made up from 3 components,
1 A storage shelf
2 A card ejection/locking lever
3 A top cover.

To make a larger capacity box, you can print more of pieces 1 and 2. But each box needs only one top cover.

ASSEMBLY:
Storage shelves have registration pins and recesses to allign a shelf to the one above it. Shelves are glued to each other by carefully applied CA adhesive to the pins or the recesses. When the required number of shelves has been glued, the top cover is similarly glued to the top shelf.

MPORTANT:
Apply glue very carefully to the pin that is the pivot for the ejection lever to void gluing it in permanently. Make sure the CA adhesive has completely curerd before inserting an SD card. In addition to risking that the card is glued to the box, CA vapour released during curing can damage the SD card. There are tiny dimples on front of the locking arms, these sometimes need some sanding down depending on print resolution. In any case they will wear out with use.

USE
For the locking mechanism to work as intended SD cards must to be inserted with the contacts facing the front and and downwards. This allows the locking lever to fully close against the cut corner of the SD card. If the card is inserted incorrectly the locking lever will not fully retract and lock.