If i understand this correctly, all i need is the printer and one of you kind fellas can email me an 1803, or a 311-90, or even an H808 file(rendered in something like Autodesk), and this machine will print me an actual horn, to scale, to the last detail.

Planetary Gears On A Printrbot 3D Printer - YouTube

Printing a bicycle with a 3D printer - YouTube