Windmill that Cuts Itself Down

This piece is, I think about 10 years old, but it’s still pretty cool. It’s made of scrap wood, bottlecaps, wire hangers, paperclips, tin cans, and a couple of spent 0.30 caliber rifle shells. As the blades turn, they drive a mechanism that converts the rotary motion into a reciprocating motion, driving a hacksaw blade against the support of the entire thing. Eventually it will cut itself down. It’s a study for a larger piece that I’d like to do eventually.