This guy fixed his teeth by 3D printing his own plastic braces for $60

Amos Dudley An undergraduate at New Jersey Institute of Technology made his own plastic braces using a 3D printer, $60 of materials, and a healthy dose of ingenuity -- and they actually worked. Amos Dudley had braces in middle school, but he didn't wear a retainer like he was supposed to, so his teeth slowly shifted back. He didn't want to shell out thousands of dollars for a whole new round of braces, so the digital-design major decided to make his own. On his blog, Dudley wrotethat he was anun...