Friction Box System

This is a connector system for boxes in various sizes.
It contains a outer and a inner part as well as an hole part.
These Files contain their own support structure!
Please level each item for your self.
All you need is a number of M5 Allen-Screws (min. 40mm long).
And 9mm self locking nuts for the inner parts.
While constructing you have to drill through the edges of each board, to clear a hole for the screw.
The construction is a bit tricky but it holds a lot of weight.
Feel free to add or remix this design.