Abstract
We explain how the obtetrahedrille can serve as a versatile building block for 3D structures. In particular, the
obtetrahedrille can be used to construct triangular beams in the body-centered cubic lattice, and square beams in the
simple cubic lattice. We present a language to describe structures composed from obtetrahedrilles. We show some
sculptures that can be constructed from obtetrahedrilles. Finally, we discuss how to magnetize the obtetrahedrilles to
allow simple experimentation.
