Theo Jansen walking Mechanism

I was working on something like a "walking machnie" based on the mechanism of Theo Jansens "strandbeest". The parts of both - Prototype I and Prototype II - work fine but I had troubles finding a suitable connection for the joints, since some of them require to be rotatable whilst others need to be locked. Further it was difficult preventing the screw-heads from getting in the way of each another. Therefore I built the third Prototype of this out of 3d-printed elements that had cavities for the