Take two identical elliptical discs and slot them together along diameters so that the discs are perpendicular. There is one separation of centres for which the compound shape has a centre of mass which remains a constant height above the surface of a table. The resulting shape rolls along in a most intriguing way.More information is available from www.howround.com
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garciarosa100 4 months ago
Nice psychedelic look to it, but what can it be used for?
Axeon420 1 year ago
i've noticed that the last one has the profile of a perfect circle from the side
bachaddict 2 years ago
what's the dimensions etc for the last one?
bachaddict 2 years ago
the new wheel!
SpikedDoor 2 years ago