Hexagon Revell Paint Storage + Organizer fully modular (4 units)

I created this design to store my Revell email paint containers.

I don't know if other paint containers will fit.

For the most stable use, i recommend to glue the parts together but normally this shouldn't be needed (if you don't live in a vibrating house).

There are 4 types of units (mod1,mod2, mod3 and mod4).
These units fit together and can be stacked.

If you don't glue them together, you can choose the setup of these modules by respecting the laws of physics and change it howe