After folding the octagonal box from 4 units, I tried the 8-unit box. While folding, I realized that the 4-unit version is actually an extension of the 8-unit box. So folding the individual modules was pretty easy.
The assembly was not as easy as the 4-unit box. Mainly because there are 8 arms that have to be folded together to form the spiral at the top. And obviously, dealing with 4 spiral arms was way easier :)
I had used 3 inch squares to make the modules. So the result was a fairly small, octagonal box which is the perfect size for gifting jewelry in.
Model Details:
Model: Octogon Box
Creator: Tomoko Fuse
Book: Let's Fold Spirals
Author: Tomoko Fuse
Difficulty Level: High Intermediate
Paper Ratio: Square
Paper Size: 3 inches
Model Size: ~ 2.5 inches across and 1.25 inches tall (including spiral)
Modules: 16 (8 for base and 8 for lid)