3D printers have been around for about 20 years. When I first started using them in 1998, it was a very brittle plastic, some even used a corn starch material. Over the years the technology has gone Star Trek. Jay Leno owns one of the new 3d printers to make parts for his old bikes and cars. But this video shows it in much more detail. You must watch this video and see just how crazy it has become.