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Re:Porsche found a way to 3D-print lightweight pistons that ... by culturestate on Monday July 13, 2020 @11:01PM (#23828028)
Powdered metal parts are everywhere today, but it's not really an additive process - you pour a bunch of powder into a mold, compact it, and then bake it.

PM parts are also porous and fairly weak (in some dimensions) relative to machined counterparts, so you don't typically see them in critical applications.

Re:Porsche found a way to 3D-print lightweight pistons that ... by ip26 on Tuesday July 14, 2020 @12:38AM (#23828574)
Yeah, now that you mention it, camshafts have quite a reputation for fragility. I always wondered how a rod of solid steel could fracture like that.