The problem with how difficult aluminum casting is or is not is totally irrelevant. The real problem is that this structural member with a giant visible crack

The problem with how difficult aluminum casting is or is not is totally irrelevant. The real problem is that this structural member with a giant visible crack in it somehow made it through Tesla's QA process. I think I could give Tesla some slack when they were originally ramping up Model 3 production (it was a "succeed or the company goes under" moment), but reports of their sub-par QA keep coming and coming.