A derivative of the above thing, further parametrized - i.e.Feel free to flattr this or the original design, if you support our interconnected robot overlords.Edit the scad file to your needs, export to STL, print. You may particularly want to reduce the arm length if you decide to print a both-arms-inside-bot.Two example STLs with a tolerance of 0.3mm are provided, one of which you can connect to infinite chains (or plains, even!)