Hybrid–1[P,F-RD] surface (via http://www.susqu.edu/brakke/evolver/examples/periodic/periodic.html)

Hybrid-1[P,F-RD] surface (via http://www.susqu.edu/brakke/evolver/examples/periodic/periodic.html)
Hybrid-1[P,F-RD] surface (via http://www.susqu.edu/brakke/evolver/examples/periodic/periodic.html)