I am the inventor of a unique method for rapid prototyping I got an US Patent in 2000 number 6153034
Scott Crump from Stratasys examined it in Chicago at Rosemont CC back in 1999.
Terry Wohlers presented it to the public in his anual report and in the convention he also saw it in my lab in Israel at 1998, prior of exposing it to the world.
Today, most of the systems sold everywhere as open sources use also my methods and invention, all for free.
Why is that?
One of the main topics are the input method:
In my patent I used any material produced as a wire or yarn or chord, thread etc meaning that I could create any size made from any material existing I also showed methods of creating nozzles for the sake of guiding the wire or the spool.