Additive manufacturing, also known as 3D printing, is leading the way, shaping the next industrial revolution.  Recent technological advances in metal additive are disrupting manufacturing.What is so different about additive manufacturing?Traditional (subtractive) manufacturing such as milling, turning, etc., remove material to achieve the final shape of the product. Metal additive manufacturing differs, by starting with a metallic powder that is spread into a thin layer, bonding these layers and stacking layer by layer to create a part.