Ninety pieces of memo cube. This is where my ideas for the white on white exercise started. Lots of interesting planes and angles. The ball has the same structure as the C60 buckminsterfullerene molecule, or a soccer ball, which ever way you choose to look at it. If you're going to make one (and why wouldn't you), I found the best way to think of it was as a set of pentagons, each surrounded by hexagons.