The Flat Sonobe is yet another variation of the Sonobe, designed by Tomoko Fuse. The Icosahedron of the Flat Sonobe is made from 30 units. Assembly is the same as all icosahedrons, with 3 unit triangles which are used to form 5 unit rings.
The 30-unit version does require glue to hold it together. So be sure to have some glue handy before assembling this one. 6 or 12 unit versions can also be made, which are fairly easier to make.
Model Details:
Model: Flat Sonobe
Creator: Tomoko Fuse
Difficulty Level: Low Intermediate
Paper Ratio: Square
Paper Size: 4 inches
Number of Modules: 30