>
>
> I'm Looking for assembly instructions for a ball made up of Sonobe units.
> not the 30 parts ball... but the 270 parts ball (or bigger).
>
> i think its also called the epcot ball.
>
>
Hi Ami,

I think you are looking for the following:
https://math.stackexchange.com/questions/3243724/which-geometric-shape-of-icosahedron-origin-has-180-faces-270-edges-92-vertices


I have not constructed one, but to make the Sonobe version you would have
to replace each triangle in the figure with triangular pyramids.
https://upload.wikimedia.org/wikipedia/commons/0/0e/Conway_polyhedron_K6k5tI.png

Also, here is a similar construction but not with Sonobe Units. It's with
spikier units but the idea is the same.
http://origamee.net/gallery/spiky.html

The underlying structure is a buckyball. Hope all this helps.

Meenakshi
-- 
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My Modular Origami Galleries:  http://www.origamee.net

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