So this is a Strandbeest mechanism, a mechanism invented by Theo Jansen, a Dutch artist. This kinetic sculpture moves when on a slope, or as in Theo Jansen's creations, harnessing the wind's energy. I designed this kinetic sculpture using the complex but very accurate ratios of the original design. I used Autodesk 123D, and later on tested and tweaked my creation in Autodesk Inventor's dynamic simulation program, but i created it using 123D. This contraption doesn't need any screw, bolt or anything, just to be printed out. I purposely did not include dimensions in my Intsructable, as not to constrain people's imaginations and ideas. As long as you follow the ratios and concepts from the following site
, you should have a great, perfectly working, awesome Strandbeest.