The US researchers investigated nuclear reactor-grade steels made with a 3D printing process called laser powder bed fusion.
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Spotlight on 3D-printed guns

A convicted felon who reported stolen guns to police is now facing charges after officers discovered he was allegedly manufacturing 3D-printed weapons inside his home, authorities said. James ...
A Brevard County man is behind bars after police say he used a 3D printer to make firearms, including one that was converted into a submachine gun.
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