This is an analysis of the geometry of the “3-2-1”-sculpture by Tord Tengstrand, presented at the Bridges 2020 Art Exhibition. Derivative shapes are then obtained by changing some of the geometrical parameters. In one extension, the 3-fold rotational symmetry of the original sculpture is changed to values ranging from 2 to 6. In another extension, the complexity of the iterated edge-curve is enhanced to make more passes around the central void. In addition, one half of some of those derivative geometries are used as a modular building block for the more complex polyhedral frames structures based on the Platonic solids.