YouTube - 3D Printer‏ This flat blows my mind! Now we can literally scan any object, and 'print' a working copy of it in minutes! It uses a polymer and resin, but the guy says it can be given strength to make useable tools! Moving parts arenot a problem. Scale this up, and who knows just what could be made? Scale models will be a snap. Auto companies could scan a small scale model of a new design, and produce a full-scale copy! If we could use CadCam to provide the input, you could make a working part from digital designs! If metal could be incorporated into the matrix.......... I can see all kinds of very interesting applications for this technology!