Replying to another post, it might not be very high volume, but it certainly isn't prototyping: it's in production in a very heavily regulated sector. More impressive to me than mass producing for example 10,000,000 key holders a month.
Of course, those might be comparatively boring parts, like radio covers and plastic ducting. You won't be able to 3D print a working jet fighter in your garage for at least 5 years, maybe more :)
That factory will build fuel nozzles for the CFM Leap-1, which combines a core made by GE and a low-pressure section from Snecma. GE is now evaluating a different 3D printing process to build LPT blades for the GE9X – the engine selected to power the Boeing 777X, and the engine maker’s most complex propulsion system yet.
http://www.flightglobal.com/news/articles/analysis-ge-ponder...