(notions explained here)
Triplet surface, principal and Levi skeletons and nerves (design by Daniel Bedats)
Triplet crystal, skeleton and nerves (design by Daniel Bedats)
3d printed decuplet skeleton (design by Daniel Bedats)
Decuplet crystal, skeleton and nerves (design by Daniel Bedats)
Octet crystal, skeleton and nerves (design by Daniel Bedats)
Octet crystal, big and medium skeletons, and nerves (design by Daniel Bedats)