These creations have been dubbed "The Ultimate Sphere" by YouTube users, and each one takes 1860 magnets to create. They are rings of 6 magnets stacked 2 loops high, then assembled into a pentagon pattern. 12 pentagons makes an icosahedron. I filled the hole in the center of each pentagon by adding a loop of 5 magnets, with reverse polarity so that it would fit snugly into the hexagonal pattern that makes up the outer layer of this ball. I'm not sure who published this creation on the internet first, as there are nearly countless tutorials regarding the ultimate shape, but whoever it was has my sincere thanks! This is a fun shape to put together, and even my 7yr old daughter can assemble it without any frustration!