Half of a 120-cell
prusaprinters
This model is featured in figure 3.22 of Visualizing Mathematics with 3D Printing. This is joint work with Saul Schleimer. The 120-cell is one of the six regular 4-dimensional polytopes. This is the result of taking the edges of the polytope, radially projecting them onto the unit 3-sphere in 4-dimensional space, then stereographically projecting the result into our 3-dimensional space. We remove the half of the design in the hemi-3-sphere nearest to the projection point, which makes printing the image in 3-dimensional space feasible. Video: https://www.youtube.com/watch?v=MyUfAs30yZk Shapeways: http://shpws.me/DqGB Category: Math Art
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