White nylon plastic with a matte finish and slight grainy feel.
About this Product
Three levels (15 sets of 15 truncated octahedra, each consisting of 14 around a central one) were packed tightly together, then inverted through the unit sphere, a total of 225 truncated octahedra. Inversion replaced each vertex vector with that vector divided by its length to the 1.6 power (this makes the inner shapes larger than the standard inversion, v replaced by 1/v). Straight line segments between vectors were preserved, not inverted to curves.