Gyroid

The gyroid (G) type surface is a triply periodic space-dividing minimal surface discovered by Alan Schoen in the late 1960’s. The surface is bi-continuous in that it fills a boundary, dividing it into two (and sometimes more) continuous spaces. I've been working to understand Mathematica's code and to create the gyroid, as well as various other surfaces, using Mathematica. But the gyroid is looking like the right choice. I'm having luck controlling the frequency (period) of surface as well as manipulating the box ratio. I'm really interested in controlling the sectional profile of the spaces--tightening the surface so that one space may be become larger than another. But haven't figured that out yet.