this post was submitted on 20 Oct 2023
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Elon Musk says 'we dug our own grave' with the Cybertruck as he warns Tesla faces enormous production challenges::Tesla CEO Elon Musk said Wednesday that the Cybertruck's unique design means the company faces immense challenges in scaling production.

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[–] dragontamer 69 points 1 year ago* (last edited 1 year ago) (3 children)

I've been doing PCB-board design recently. Here's the manufactuering specs: https://www.digikey.com/en/resources/dkred

So that's 0.13mm tolerances to my printed-circuit board. Or 130 microns.


Current leading theory is that Elon Musk is such an ignorant dumbass that he doesn't know the difference between mils and microns, despite running a car company / manufacturing firm. Give that a thought. Even then, 10-mils tolerance is near this PCB design, an object that's only a few inches in size. Cars are much larger and normally should be built to much wider tolerances than a fucking PCB board.

[–] [email protected] 25 points 1 year ago (2 children)

If he said <10 mils, I'd might have bought the explanation that Elon actually meant millimetres. Micron is a very specific metric-based unit which to Elon might have been trying to use like a buzzword.

The moral of the story is don't say stupid engineering stuff if you don't want engineers to laugh at you.

[–] macrocephalic 33 points 1 year ago

And 10 microns at what temperature? Because on something the size of a car, made of mixed materials, thermal expansion of less than a degree is going to blow that figure.

They couldn't apply paint to a tolerance of 10microns.

[–] [email protected] 4 points 1 year ago (1 children)

Ten mils is .010" or .25mm if I'm not crazy.

It's a very standard tolerance for aircraft parts.

[–] [email protected] 2 points 1 year ago (1 children)

Yeah and that wouldn't be too bad either... still expensive but not completely unrealistic for ALL parts of a car.

[–] [email protected] 3 points 1 year ago

Kinda unreasonable for the number of cast parts most cars use, but for machined surfaces it shouldn't be too bad.

[–] Red_October 25 points 1 year ago (1 children)

It's almost like Elon Musk is a complete fucking moron and not an Engineer. The wanker has never actually designed a thing in his life. He just tells other people to design something, or buys an existing company, then struts around like he thinks he's the smartest thing around.

[–] [email protected] 4 points 1 year ago

He was fired for being incompetent. Only got rich because rich daddy and because he got lucky with stocks

[–] [email protected] 1 points 1 year ago

I recently listened to a podcast about musk which was more on the anti side. The podcast had some parts about spacex and musks own work ethics, which told more of a story that he actually has some insights and knowledge and was a insane workoholic. Which shifted my perception of him. He isn't dumb, he is a really good conman.