This is a spatial Bricard 6-Bar linkage that can be made from card stock, best sliced by a laser cutter like the Epilog Zing. ( )

There are slogans on the faces. I originally designed this cardboard toy to advertise the Make Lab at our school arts festival called ArtRageous. I called it a mechanical donut, but my more artistic colleagues called it "Perpetual Motion"

Feel free to put in your own slogans!

Albertus Mus in the Discussion comments also pointed out earlier work related to these folding designs. Check out:

(1) IsoAxis ( )

(2) Kaleidocycles ( )

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