Parametric construction toy

While i'm still working on software infrastructure for my robot dog bandit, I thought, that I have to print something to keep my printer alive...
Everybody knows those metal construction kits I think?
This is a parametric scad file to build your own. Actually, it's optimized for M3-Screws because it makes everything a bit more compact.
Feel free to resize it.

Edit: I added a servo bracket which should at least fit an sg90..
just printing it to test..