Hydrangea Icosahedron
For folding Hydrangea Icosahedron (and many other shapes as well), you can just follow the instructions for Hydrangeaa Cube, ...
Models representing all sorts of stellated polyhedra and other things that look like balls covered with spikes.
For folding Hydrangea Icosahedron (and many other shapes as well), you can just follow the instructions for Hydrangeaa Cube, ...
Instructions for the model were published in Meenakshi Mukerji’s book, Marvelous Modular Origami, on page 18.