This was super cool thanks for the post. It's interesting how the pulley system is the improved method while this is the 'old' system for a lot of residential w

This was super cool thanks for the post. It's interesting how the pulley system is the improved method while this is the 'old' system for a lot of residential windows - but does work very smoothly. Have had a rope snap before with the window up before and shatter the pane.