Awesome cube with gyroid surface
A gyroid is an infinitely connected triply periodic minimal surface discovered by Alan Schoen in 1970.
The gyroid is the unique non-trivial embedded member of the associate family of the Schwarz P and D surfaces with angle of association approximately 38.01°. The gyroid is similar to the Lidinoid. The gyroid was discovered in 1970 by Alan Schoen, then a scientist at NASA. He calculated the angle of association in his NASA Technical Report and gave a convincing demonstration but did not provide a proof of embeddedness (although he did provide pictures of intricate plastic models). Schoen notes that the gyroid contains neither straight lines nor planar symmetries. Karcher  gave a different, more contemporary treatment of the surface in 1989 using the conjugate surface construction. In 1996 Große-Brauckmann and Wohlgemuth  proved that it is embedded, and in 1997 Große-Brauckmann provided CMC variants of the gyroid and made further numerical investigations about the volume fractions of the minimal and CMC gyroids.
Extremely limited release and no longer available at Hill Farmstead