Tetrahedral Symmetry on a Sphere

Here is openSCAD code which covers a sphere with a pattern displaying tetrahedral symmetry. The code uses the same technique as that described in things 39424 and 39818 and completes the method based on the Platonic solids.


A tetrahedron has 4 three fold rotation axis which pass through the vertices. The vertices are mapped to a sphere and the 3 fold patterns centered at the mapped vertices. The pattern used was sierpinski_triangles_3.dxf; the dxf file and a picture are available at thin