Laser etching is a remarkable way to see complex 3D data.
Glass Crystal
80mm cube
This astonishing crystal cube features a laser etching a projection into 3D-space of the Gosset 421 polytope.
his projection is notable for showing all 240 vertices, arranged in the concentric circles that appear in the common 2D "spirograph" rendering of this polytope.
Bathsheba Sculpture E8 Crystal Review