RomanArmyTalk

The 3d printing world is advancing rapidly. Since creating adequate duplicates is complex undercurrent methods, would it be a good initiative to start an image base that would be reproducible? I was thing small parts like belt buckles that could be used to cast with,but there are going to be new capabilities coming rapidly. Printing a duplicate of a actual sword, for example. See what is going on in London at the moment:
I
http://www.3dprinter.net/3d-printshow-lo...er-barnatt

So what material are these objects made from? Some kind of thermoplastic?