Extra blogging : In future, how 3D printer will influence to our economy? (posting by ko minjin (고민진))

3d print have a lot of useful and good elements. However, it includes harmful elements also. It can copy weapons. For example, cleavers , guns, hammer and badly nuclear weapons and so on. So people use 3D print at crime. And it can also copy money. People used to exploit fake money or weapon for fraud, gambling, illegal and so on.