(Picture 1) Kimmo Huosionmaa 3D-printers can risk the national security because the production of weapons like assault rifles is now easier than ever before. By using modern cheap 3D-scanning technology, everybody who wants can scan the parts of personal assault rifle and ammunition in the army, and send those files to the friends of this person. And if those “friends” have access to the 3D-printers, what is able to make metal parts, would the result be that some MC-gang makes their garages the weapon factory, where they make assault weapons. Also, cartridges and magazines of those weapons can be made by using 3D-printers. That is the very big risk for public security. The problem with 3D-printers is that they are free to buy. The 3D-printing technology can also connect to the MIG-welding machine. The 3D-printers what have the capacity to produce metal parts are actually modified MIG-welding machines. This makes possible to make metal parts for cars, bicycles, and weapo...