Twist-Rhombic Dodecahedron Experiments

The Rhombic Dodecahedron, and its Twist Rhombic Dodeachedron variation, are space filling polyhedra. See http://en.wikipedia.org/wiki/Honeycomb_(geometry)
Using the framework of a Twist-Rhombic Dodecahedron as the base unit I'm experimenting here with shapes built from multiple units that are then manipulated in SketchUp with the Artisan plugin.