A Hollow Octahedron Made of Rhombic Dodecahedra, with Variations

hOLLOW oCTAHEDRON mADE OF Rhombic Dodeca

The original polyhedral cluster I built using Stella 4d (available here) is above. Below is its 29th stellation.

hOLLOW oCTAHEDRON mADE OF Rhombic Dodeca 29th stellation

And the 30th stellation, as well:

hOLLOW oCTAHEDRON mADE OF Rhombic Dodeca 30th stellation

This is the original polyhedral cluster’s dual:

hOLLOW oCTAHEDRON mADE OF Rhombic Dodeca dual

The next image is a variant of the original polyhedral cluster, rendered with only its edges, but not faces or vertices, visible. I wish I could remember exactly how I made this variant, but I simply cannot recall the exact methods I used.

hollow octahedron variant

This is the dual of the polyhedron shown immediately above, rendered in the same manner:

hollow object made of cubes -- dual of hollow octahedron variantThis is a compound of the two dual polyhedra right before this sentence.

hollow octahedron variant compound of it and dual

Two Compounds of Six Tetrahedra Each

compound of six elongated tetrahedra

In the image above, which I stumbled upon using Stella 4d (available here), the tetrahedra are elongated. If they are regular, instead, the same arrangement looks very different:

Tetrahedra 6