A 3-4-5-hat
September 28, 2007 by Florine
Last weekend I went to visit my friends Sylvie and Alex who work in the Max Planck Institute in Stuttgart. And I brought them, or rather, her, a present: a 3-4-5-hat!
(Grapje voor de Nederlandstaligen: in plaats van “1, 2, 3, 4, hoedje van papier” is dit dus een “3, 4, 5, hoedje van katoen”.)
I made it from dark blue and blue-striped cotton yarn, colours that go pretty well with her sweater (which was a coincidence). This picture was taken over Irish coffee in Café Einstein.
I explained how I made it, and that the structure of the hat is sort of in between a regular dodecahedron (12 pentagons) and a icosahedron (with 20 triangular sides). Then Sylvie made me a big compliment by remarking that I could have been an experimentalist! :-)
[...] I made it, using the same blue yarn I used for Sylvie’s hat. This time I made a hyperbolic surface by decreasing 1 stitch in 10, starting with a circle of [...]