I got most of the parts but not sure on the design. All the ones I've seen online have a large hole cut into the bottom of the sphere with the top pulley inside the sphere. I can't find any information that this in necessary. For ease on construction I thought I'd put the top pulley under the sphere in the support tube and run a wire from the comb to the inside of the sphere. Im going to try this idea this weekend, but wanted some input if I'm going the right direction.
thanks
Jason