I just joined the forum but have been interested in mechanical television for a very long time. For now the Mindsets kit will do, but eventually I'd like to construct other sets.
Perhaps others here have employed this idea. If so, it has also occurred to me that a sufficient mirror screw might be constructed more easily and cheaply.
Adhesive mylar on the edges of black styrene strips in the proper helical arrangement should be almost as good as polished metal. It would also be much lighter allowing a smaller motor and a less substantial mount.