Printing dangerous weapons
Printing Weapons: Another major disadvantage is the ability to print dangerous objects such as plastic guns, knives, or any other object that could be used as a weapon. This transformation technology will make it easier for criminals and terrorists to bring weapons in public places such as an airport with ease and without the possibility of detection.
Scan & Fraud: 3D printers can be used to scan and print I.D. and credit cards, car keys, as well as a multiplicity of other private belongings