The competition for most successful 3D-printed firearm has moved to Canada, where a man known only as "Matthew" claims to have designed a 3D-printed rifle that withstood 14 shots. In a YouTube video published last Friday, the rifle is fired successfully three times before a text screen claims it developed a crack in the barrel after firing 14 total shots.
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3D printing has been attracting more attention in recent months as a tool to create gadgets, toys and miniature works of art. Now President Barack Obama thinks it can also play a role in strengthening the military and America's sagging manufacturing industry.