3060 spheres were used in total for building this large structured ball made of 12 three-layered pentagon pieces. But this figure can be easily up- and downsized. Making the pentagonal hats with side length 3, 4 and 5 instead of 6, 7 and 8, the smallest version can be realised with 720 spheres ("just" 4 sets). Please find the tutorial video below.
/* */ ?>