Comment on A puzzle that tiles infinitely across both sides, based on the Klein BottleparentComments−mcherm8yThere are lots of projects that do this (implement a Klein bottle with a crossing).−dancek8yEven my dad has knit several Klein bottle hats for fun, inspired by one of those projects. I got one as a Christmas present.
Comments
There are lots of projects that do this (implement a Klein bottle with a crossing).
Even my dad has knit several Klein bottle hats for fun, inspired by one of those projects. I got one as a Christmas present.