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Wheels within Wheels, Spheres within Spheres. Hold this form at the right angle and it looks like the classic child's drawing of an atom with electrons circling round it in two shells.
The Cube-octahedron is the most important of the 13 Archimedean Solids due to its being the 3 dimensional Vector Equilibrium.
The 4th dimensional vector equilibrium is one of the most remarkable shapes in any dimension. It is one of the 6 Platonic Solids, the '24 cell', and I call it Metatron's Compass.
This form is one of my studies in creating a 3D Metatron's Cube. If each of the 25 vertexes is connected to all the others, and each one is the center of a sphere that touches its neighbors, then you have the exact analog of Metatron's Cube in 3D
The lines here are very thin, and in flexible plastic it is fairly fragile, but quite enchanting. It should be fine in any metal. We do have have a larger stronger version in Sandstone in the shop