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by thrwy_01 2171 days ago
Powdered metal camshaft lobes have been in wide use in production vehicles for several decades.
1 comments

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.

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.