Most manufacturers would never dream of switching from an investment cast part to one made by additive manufacturing, especially if they already had paid for the casting mold. Yet that is exactly what GE Aviation is doing with four bleed air parts from a land/marine turbine. They made the decision based on cost and time to market.
https://blog.geaviation.com/technology/game-changer-four-parts-that-prove-additive-manufacturing-can-compete-with-casting-on-cost-alone/
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