The stellated edge-only forms remind me of a toy I got as a child from 
the Science Museum of Minnesota - I wonder if I still have it, in fact.  
It was a kit for building shapes like this, with vaguely star-shaped (6-
pointed IIRC) rubber caps that you could insert clear plastic rods into 
in order to make various shapes.

Might be time to rummage around in the basement to see if it's in a box 
somewhere.

Jim

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