my matchbox roads

I really liked the idea of Supeso to build a street puzzle for his kids and wanted one for mine, too. :-)

Since there were some minor details i would have liked to change, I redesigned his idea in openscad giving some of my thoughts into it.

These were:
- double puzzle nose, so any part will fit any other part in any direction (where the road is)
- street marks are printed directly on the board, I don't have an airbrush..
- holes in the corners allow to put traffic signs on the board.