[Dug North] is a creator of such inventions, making automata out of wooden gears, cogs, and cams. [Dug]’s inventions are simple compared to turbine engines, but they still retain an artistry all ...

[Dave] builds custom wooden orreries, which are mechanical models ... There are no motors, either. The gears are centrally connected to nested brass tubing and the mechanism is actuated with ...