On this one I made the two chunky gears first. I've always avoided making my own gears because of the inherent problems with meshing, expansion due to humidity, and having to make them so darn precise. I thought to myself, "Why can't I make a couple of chunky gears and have them loosely mesh?" Once I made my gears I wanted to make a simple crank, which ended up not so simple. I had to add the yellow slider piece to keep the connecting rod at the same angle all the time or the mechanism would lock up. To go along with my other pieces, I carved a small figure doing a simple tip of the hat. Sort of like a Rube Goldberg machine.