Someone asked (https://news.ycombinator.com/item?id=6230807 https://news.ycombinator.com/item?id=6230807) in the discussion of 507 Mechanical Movements for a to

Someone asked (https://news.ycombinator.com/item?id=6230807 https://news.ycombinator.com/item?id=6230807) in the discussion of 507 Mechanical Movements for a tool that could simulate those movements. This is such a tool. You could pick an interesting mechanical movement (http://507movements.com/index23.html http://507movements.com/index23.html) and try building it.