I used 900 silver Buckyballs for the cage on the outside of this creation. That's 4 and 1/6 sets. Next I used 240 RED Neocube magnets making the inner icosahedron. Along with those Neocube magnets I also used 180 Buckycube magnets! This design is pretty simple to whip together once you understand the fundamentals of the outer cage design. I've made so many different sizes and variations of that outer icosahedron that I could probably make it with my eyes shut now a days!