Straight-ribbon Woven Dodecahedron
Posted on December 7, 2024
This collection of 20 loops of straight ribbon uses the widest possible ribbon to consistently weave around a dodecahedron symmetrically.
Truncated 600-Cell
Posted on July 16, 2024
We constructed this design at a recent Stanford University Math Camp.
Meta Triamond Lattice
Posted on July 10, 2024
A beautiful lattice with some surprising symmetries.
Understanding Icosahedral Rotations
Posted on June 10, 2024
An explanation of how the rotations of a snub dodecahedron can defy our intuitions
Hidden-Surface Removal for N-Dimensional Polytopes
Posted on April 18, 2024
Projecting an N-dimensional polytope to 3-d is easier to see when you show only the "front"
Building the Hyperdo
Posted on April 4, 2024
Step-by-step instructions for building the Hyperdo kit from Zometool
Oblique Projections of A4 Polytopes
Posted on April 1, 2024
Two different A4 polytopes, relatives of the 5-cell, showing ghost symmetry in their projections to 3D and 2D
Perfecting Steve Baer's Triple Dome
Posted on February 18, 2024
Steve Baer's triple dome at Drop City can be built precisely with real Zometool struts, as a particular subset of a projected H4 polytope. Three alternatives are discussed.
Building the Yellow-Stretch 120-Cell
Posted on February 15, 2024
A 3D design created in vZome. Use your mouse or touch to interact.
Stellations of the Regular Dodecahedron
Posted on November 4, 2023
An aid to visualizing the stellations of the regular dodecahedron