Precision additives

It's great to occasionally read about real-life applications for 3D printing rather than the media frenzy around making guns and drugs.

General Electric Aviation, in conjunction with Sigma Labs, are on the verge of producing fuel nozzles for jet aircraft using additive manufacturing techniques.

GE are on going to '3D print' fuel nozzles for jet aircraft 

This all makes a lot of sense.  High precision components where tolerance needs to be measured at a micro
level seem to lend themselves to this form of fabrication.

I guess that speed of manufacture is not the main concern when you are producing a component that must not be allowed to fail (although they are looking for printing speed gains too).

With a 3D printing process that uses lasers to gradually build up a part that is an exact representation of the computer blueprint, this component should be as near to perfect as we can hope to make it.

Good news indeed for aviation safety.

In what other industries are we likely to see this kind of precision fabrication, I wonder?  Will we perhaps see these machines used to clone parts for their own kind, a sort of self-perpetuating production line of next generation 3D printers?

GE Aviation and Sigma project (3D Printer World)