Here's a look at some of the most important trends in 3D printing in today's industry and the future of 3D printing: Also known as additive manufacturing, 3D-printed objects are created by a printer that lays successive layers of material until the object is complete. Most materials used in 3D printing are polymers, a type of plastic that becomes liquid when heated and solidifies when cooled, but does not weaken. But as technology matures, researchers are finding new materials, even edibl...