Leaked Email Shows Elon Musk Demanding "Sub 10 Micron Accuracy” Cybertruck Parts
Tesla is facing issues with the bare metal construction of the Cybertruck, which Elon Musk warned was as tricky to do as making Lego bricks
https://jalopnik.com/the-cybertruck-is-harder-to-build-than-a-lego-apparent-1850770550

Leaked Email Shows Elon Musk Demanding "Sub 10 Micron Accuracy” Cybertruck Parts
Tesla is facing issues with the bare metal construction of the Cybertruck, which Elon Musk warned was as tricky to do as making Lego bricks
Jalopnikto build it to that accuracy the car would have to cost millions
To build it with that accuracy would be physically impossible. Guess he forgot about thermal expansion and contraction. Guess he forgot about the weather…
Nah, not impossible people build stellarator type Fusion reactors with large freeform metal parts in that tolerance region that are exposed to liquid helium.
Does not change the fact that all materials expand when temperature rises and contract when temperature cools. Plus different materials have different temperature expansion coefficients.