3D printing scales up

There is a lot of hype around 3D printing. But it is fast becoming integrated with mainstream manufacturing: My three page report in Technology Quarterly here: http://econ.st/165jGGg Leader on 3D printing, http://www.economist.com/news/leaders/21585005-signs-are-3d-printing-transforming-manufacturing-not-ways-you-might Talking about my three pages on how 3D printing scales up: The Economist http://econ.st/165jGGg