I am just amazed, and I am not easily amazed. I saw this SketchChair application at the Ponoko Blog. This is just plain amazing. I love Flat-pack and this is like Flat-pack crack. This program is a collaboration between Greg Saul and the JST ERATO Design UI Project in Tokyo. This is a Processing based program that allows anyone to simply sketch a chair and the program generates the parts required to build it in real time. The parts are ready to be cut on a CNC router or laser cutter.
You really need to watch the video. It is really fun to watch. The program even allows real world physics to be applied to the chair, to see how well it will stand up on it’s own and when a human sits in it.