As I was searching for software that would help me with the geometry of kinetic metal art, I was pointed to this software called LINKAGE. It is a bit difficult to learn, and the You Tube training videos lack complete clarity, and assumptions about what you ALREADY KNOW are made. However, when you work with it, you discover that you can begin creating working mechanical devices that actually move, as the software animates your creation and tells you if things are wrong. Here is a short video I made. Oh, and the software is FREE! Enjoy! Joe
