My daughter sent me this link because she knows that I'm a woodworking hobbyist. A great video but you might want to turn down the music. It's entitled " 19" Geodesic sphere made with birch plywood". He has a pretty interesting miter saw setup too. I went to his website and checked out his inventory. A ball similar to the one in this video sells in the $1,800 range. I don't want one.