Poly-Twistor by 3D printer: Classification of 3D Tori
Akio Hizume, Yoshikazu Yamagishi and Shoji Yotsutani Proceedings of Bridges 2013: Mathematics, Music, Art, Architecture, Culture (2013) Pages 555–558
Using 3D printing, we can manufacture forms called Poly-Twistors.
These are knotted closed loops around the surface of either a torus
or a polyhedron. Variants have handedness and can be parameterized
using different integer winding frequencies.