Dug writes -

With the exception of Brad Litwin’s piece entitled Extra-Universal Movement, I don’t know if I’ve seen such an elaborate hand-cranked wooden machine. This gentleman has constructed an amazing device using only wood and glue — no nails, no screws or ball bearings. It is quite an achievement. It is my sincere hope I’m doing things like this at 70 years old. Bravo!

Via Land-o-Links.