Universal Vertex Module

The universal vertex module (UVM) allows to build complex structures by assembling them together. The vertices are assembled using cable ties at 90 degree angles. The connecting material between the vertices can be anything: wood, PVC piping, anything lying around...

[This part is fully documented on its own GitHub repository](https://github.com/Nurgak/Universal-vertex-module)

[A parametric version is available to customise the UVM](http://openjscad.org/#https://raw.githubusercontent.com/N