The Most Incredible 3-D Printed Things We’ve Ever Seen

Think 3-D printers can only make simple toys and trinkets? Think again. From amazing prosthetics to custom surfboards, here are the latest, most incredible things that enterprising engineers are building with 3-D printers.The levees have broken for 3-D printing, and the resulting deluge of printing-concepts-on-the-cheap is flowing faster …