A 3D Complex Crystalline Structure

My homepage video describes shows off this shape, amd describes how it was created (starting from one little cube, and following very simple rules!)
Youtube video:
https://www.youtube.com/watch?v=wxwvMNF_m2k&index=1&list=PLCTMeyjMKRkrhMSOf0SD677liIG6aaZ_3
Also, my website
https://sites.google.com/site/richardsouthwell254/home
has loads of free 3D printing resources (design apps & stls) on it.
This particular structure is very interesting, because it has lots of hidden details (cham