Ishibashi ball

nonkelgans · Post by **nonkelgans** » March 20th, 2010, 12:50 am

OK, I can make an ordinary Ishibashi ball with 6 modules but there seems to be a way to make one with more modules by adding a crease somewhere (so I have read on the internet), anybody knows where that crease might be??

nonkelgans · Post by **nonkelgans** » March 21st, 2010, 4:08 am

Nobody knows??

Jonnycakes · Post by **Jonnycakes** » March 21st, 2010, 7:42 am

like this? It looks like it follows the same structure as Sonobe unit polyhedra. The Ishibashi ball units are essentially just fancy Sonobe units, so if you mountain-fold them in half, they should work similarly.

nonkelgans · Post by **nonkelgans** » March 21st, 2010, 12:00 pm

I Think you wanted to show a photo but that doesn't show. But Thanx for the tip on folding them in half, I will try that. It's indeed a Sonobe unit, Why didn't I think of that myself? Arrrg, fuzzy brain.

Jonnycakes · Post by **Jonnycakes** » March 22nd, 2010, 1:21 am

Ah, sorry-I meant to post a link, but I guess I forgot it

It is just a photo I found on a google search: http://www.giladorigami.com/P_Meenakshi ... hiBall.jpg