Originally Posted by
Boxkite
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Nessism- I'm no metallurgist but 'grain structure' would be better with cast lugs thus stronger. I do know crankshafts are stronger when cast than if cut from billet all else being equal. Think of wood grain structure.
Some research is in order. You can get 3D printed metal parts that are far stronger than the typical cast lug. Grain structure is a non issue for the most part as long as the strength is there, and lugs aren't strong anyway.