Uploaded November 2013 | Updated September 2026, 2 weeks ago
A tricky part of building this lattice, especially for a tall section, is that the bottom units must be placed perfectly straight to prevent them from partially shifting back in the flat 2 layer position they originate from.
As a lattice, this is a variety on the P-surface, where cubic cells are replaced by hexagonal or triangular prism cells. In the triangular prism cell, there are 2 vertical (up and down) and 3 horizontal outgoing tunnels from the central chamber. When observing the other side of the surface, there are chambers hexagonal prism cells, with 2 vertical (up and down) and 6 horizontal tunnels exiting. This surface is known as Schoen's H'-T (hybrid) surface.
See: http://www.susqu.edu/brakke/evolver/examples/periodic/hybrids.html#ht
A tricky part of building this lattice, especially for a tall section, is that the bottom units must be placed perfectly straight to prevent them from partially shifting back in the flat 2 layer position they originate from.
As a lattice, this is a variety on the P-surface, where cubic cells are replaced by hexagonal or triangular prism cells. In the triangular prism cell, there are 2 vertical (up and down) and 3 horizontal outgoing tunnels from the central chamber. When observing the other side of the surface, there are chambers hexagonal prism cells, with 2 vertical (up and down) and 6 horizontal tunnels exiting. This surface is known as Schoen's H'-T (hybrid) surface.
See: http://www.susqu.edu/brakke/evolver/examples/periodic/hybrids.html#ht
