3D printed hinged icosidodecahedron. The hinges are a thin layer of printed PETG. I use a slightly different method than @HCO28970306 pic.twitter.com/rWLZQMIiUO

— Gerard Westendorp (@GerardWesty31) May 17, 2021

We’re done! Solid submissions are in for all 261 cases and verifiers are working through the backlog.

AND Moritz Firsching has now written code showing all 261 unfoldings do definitely tile space. https://t.co/rOFsOCqJak

So this project has proven the result twice over!

— Matt Parker (@standupmaths) May 15, 2021