Use 30 square sheets of origami paper.
Difficulty : ⭐⭐
Time: 2 hours
 
This is Hollow Sonobe designed by Paolo Bascetta.
 
Model paper size: 
Unit (blue pattern) : 7.5 cm x 7.5 cm
 
Model height: ~ 10 cm
 
PrwOrigami - Kusudama Collection
www.prworigami.com
(December, 2019)