(1). Like the silverhexahedron this
design will flatten and pop back into shape,
hence it can also be called the Pop-up
Silveroctahedron (1). This form can be
made from many different parallelogram modules
such as Sonobe, Corner-pocket Sonobe and
Modules / Paper shape / Folding
geometry: 2 sets of 2 mirror-image parallelogram
modules from squares using standard folding
Date: David Mitchell, 1989 and 2016.
On-line diagrams for both the Sonobe and
Letterbox versions are available on the Diagrams for Modular
and Macromodular Designs page of this site.