3D hollow maze for a small ball

A 3D maze generator using data from Mathematica script.
The script generates a grid graph in 3D and its minimal spanning tree (which is a maze).

A subroutine generates vector data to copy-paste into the OpenSCAD file, and render.

With $fn=10 in OpenSCAD it's possible to generate 10x10x10 maze in around an hour.