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The laser melts fine metal powder into a precisely shaped solid metal layer so thin that it’s one-third the diameter of a human hair. When it’s done, the result is an extremely precise, complicated jet fuel nozzle — no assembly required. The old way of making nozzles required welding together about 25 separate parts.

GE engineers said it represents the first time additive manufacturing has been used to create a jet engine component tasked with such an important role under high temperature conditions.

Watch this amazing first-of-its-kind metal printing process

Read more at: http://www.cnn.com/2014/10/31/travel/future-of-travel-jet-engines/