[Uncle Bulgaria]

What a wonderful machine, David! I'm always impressed by what people come up with to solve a mechanical problem. Perhaps it's my lack of experience with such systems, but I could never come up with such an elegant and well-made solution. It looks like you bothered to varnish the box, too.

I've been musing on rotation recently as I'd like to have a go at winding my own transformer, and have just joined a forum for people who cut their own records - a fascinating process!