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The article, “The 3-D Printing Revolution”(https://hbr.org/2015/05/the-3-d-printing-revolution), delves into “additive manufacturing” and the impact it is having on the modern manufacturing industry. Additive manufacturing is the process of manufacturing a product layer by layer, instead of removing, grinding, or cutting off excess material. Per the article, 3-D printing was being used by 11% of companies surveyed in 2014. In order to reach an adoption level of mainstream, they must reach 20% according to Gartner analysts. Several companies contributing to the increase in the use of 3-D printing are GE, Lockheed Martin, Boeing, Aurora Flight Services, Invisalign, Google, and LUXeXcel. It is important to acknowledge that not only are most of these very prominent companies in today’s market, but also they stem from vary diverse sectors of the market. The article also includes that the 2014 sales of 3-D printers had already reached one-third of the volume of industrial automation and robotic sales with some future projections being up to 42%. With the increase in 3-D printing being so prominent, is there any market it won’t be able to affect? Will there be an increase in the need of trained workers as the number of 3-D printers increases?