Description
A followup to my video on expanding racks: here's a mechanism that expands in all three dimensions.
3d printing files for the NbO net expanding racks design: https://www.printables.com/model/1530689-3d-expanding-racks-nbo
Zometool: https://www.zometool.com/
The Symmetries of Things: https://en.wikipedia.org/wiki/The_Symmetries_of_Things
The Magic Theorem: https://themagictheorem.com
Visualizing Mathematics with 3D Printing: http://www.3dprintmath.com/
Patreon: https://www.patreon.com/HenrySegerman