Mark Rober designed a huge Nerf gun to win an office Nerf war. He talks to NPR's Lulu Garcia-Navarro about how he designed it, and what happens when you get hit with a pool noodle at 40 mph. Jim ...
Mechanical engineering student James Patrick is bound to turn some heads with his PM522 Washbear, a 3D-printed pepperbox revolver capable of firing up to 8 bullets between reloads. Except for an ...
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