The use of additive manufacturing (AM), or 3D printing, of polymer parts for aircraft has been growing for decades and continues to increase. The much tougher printing of metal parts is now beginning in earnest as engine OEMs and others use AM to create both simple and complex assemblies for powerplants.  The experience gained combined with multi-industry interest will accelerate AM in metals. It will ultimately bring major advances in production speed and economy, part durability, ...

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