By George Hart for the Museum of Mathematics


Frabjous is a sculpture that consists of thirty identical parts which are assembled into a geometric star with twelve spiral vortices. A few years ago, a MAKE post showed how to make a cardboard version that requires many hours of hobby knife cutting. Should you prefer a cool-looking acrylic version, made from laser-cut components, there is now a kit sold by the Museum of Mathematics. It is a tricky puzzle to assemble, but when done, you’ll have a lovely, seven-inch diameter sculpture to enjoy.

Or if you want to spring for a fancy acrylic version with an iridescent coating that changes color as you move around, that is available, too.

Catch up with all of George Hart’s Math Monday columns

Gareth Branwyn

Gareth Branwyn

Gareth Branwyn is a freelance writer and the former Editorial Director of Maker Media. He is the author or editor of over a dozen books on technology, DIY, and geek culture. He is currently a contributor to Boing Boing, Wink Books, and Wink Fun. And he has a new best-of writing collection and “lazy person’s memoir,” called Borg Like Me.

  • wundram

    Any chance of getting a DXF for the pattern with the tabs on it, it would be fun to try and make some of these in different materials.