“How Round Is Your Circle?”

Sean Michael Ragan

I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I am a long-time contributor to MAKE magazine and makezine.com. My work has also appeared in ReadyMade, c't – Magazin für Computertechnik, and The Wall Street Journal.

2399 Articles

By Sean Michael Ragan

I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I am a long-time contributor to MAKE magazine and makezine.com. My work has also appeared in ReadyMade, c't – Magazin für Computertechnik, and The Wall Street Journal.

2399 Articles

Article Featured Image
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Britons John Bryant and Chris Sangwin have written a book called How Round is Your Circle? that looks incredible. I haven’t read it (yet), but the promotional website by itself has me sold already. Highlights include Reuleaux tetrahedra, square-hole drilling, and self-righting polyhedra.

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