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Leaked Email Shows Elon Musk Demanding "Sub 10 Micron Accuracy” Cybertruck Parts

https://jalopnik.com/the-cybertruck-is-harder-to-build-than-a-lego-apparent-1850770550

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

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

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jsheradin

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It's pretty common for a CMM to be in its own climate controlled room. Parts will be placed in the room and allowed to reach reference temperature for a several hours prior to measurement.

On production lines you usually skip the absolute measurement of a CMM and use go/no-go gauges. One should fit, one should not. They'll be made of a material with similar thermal expansion coefficients as your parts. As long as they've both been sitting around for a while they'll be at the same temp. They'll have expanded or contracted the same amount from reference so their relationship of go/no-go will still hold true.

The whole field of metrology is a never ending rabbit hole - really interesting the more you get into it.

Leaked Email Shows Elon Musk Demanding "Sub 10 Micron Accuracy​” Cybertruck Parts