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sisyphus.jpg

Video from artist Dave Johnson:

There are three movements, controlled from 3 axles, and the gears on the axles have prime numbers of teeth (23, 43, 59). So technically the movements will only repeat every 58,351 turns of the small gear. There’s also a semi-random toggle on the head motion, so it will never really quite repeat. Almost all the parts press fit and/or lock together, so the whole thing can be disassembled to a pile of parts, then reassembled, adjusted, and set going again without tools.

The formal title is “Sisyphus Testing Shoes; Or, Little Man Tries Real Hard.” There’s also a Flickr photoset of its construction. [via Dug North]

Sean Michael Ragan

I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I write for MAKE, serve as Technical Editor for MAKE magazine, and develop original DIY content for Make: Projects.


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