The printing process
An other illustration with a converted into Povray from Mathematica, then rendered in Povray. To the left, we see the polytop rendered in Mathematica (directly from the STL file). The object is a semiregular polytope usually represented as a convex polytop in 4D. It hs been discovered by the Irish mathematician Alicia Boole Stott. Credit: we got the STL file from this page by John Hart.
