Japanese Man Arrested For Having Guns Made With 3D Printer...
So far 3D printing technology has been used to create harmless, if not extremely useful, plastic items, but since it was discovered that 3D printers can be used to print working firearms, which can make it through metal...
https://www.neatorama.com/2014/05/14/Japanese-Man-Arrested-For-Having-Guns-Made-With-3D-Printer/
