Hi Howard,
One of Jay Leno's clips showed just that using 3D printers to reproduce parts for older cars. The technology is here as we all know, just too expensive at the moment (like an IBM computer in the very beginning taking the space of a large building to operate it in). The iPad Pro I'm holding in my left hand here is more powerful then that first ever computer.
Yes it will all come to pass, in the future of course.
Dieter