Lipstick/hardware case with 12+1 slots

UPDATE: I have also uploaded an upgraded version of this design (https://www.thingiverse.com/thing:2351759)

Lipstick case with rack and pinion
Slots will elevate as you open te box
The lid locks itself in position once fully opened or closed: to close it, you need to lift the hinge

NOTES TO PRINTERS:
PLA works just fine
You need to print Assembly01 - Box02-1.STL twice, and the rest only once
Highly reconmend printing Assembly01_-_Box13-1.STL with layer height <0.100mm, for the other parts the resolution doesn't matter as much
Make sure to sand the rails, it really matters
Applying lubricant to the rails is optional
Welding the hinge pins to the lid is optional
Install the trays into the shell before installing the pinions (e.g. the quarter gears), and make sure to install these in the right orientation (they are not identical)
Reconmend printing the pinions with >90% infill