Spiked Icosahedron (Sonobe variant)

Folding instructions: Sonobe unit
This is the primary page for this model.
Paper: copy paper
Type: modular spiky balls (implies: abstract modular, abstract, geometric, mathematical object, modular, multi-sheet, spiky balls)
Author: Michał Kosmulski, other/uknown
Units used: Sonobe Unit, by: traditional model (simple variant, designed by myself, and probably also independently by others)
Unit count: 30
Colors: orange
In albums: Models designed by me and by others, Sonobe variants, Modular ② — medium number of units

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I think this is my first Sonobe variant. Since it’s one of the simplest modifications possible, it has probably been independently discovered by many others.

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