this post was submitted on 20 Aug 2023
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[โ€“] bufordt@sh.itjust.works 4 points 1 year ago (1 children)

New ball bearings are still likely significantly smoother than the earth. Old worn out ball bearings might be rougher.

[โ€“] Gormadt@lemmy.blahaj.zone 3 points 1 year ago* (last edited 1 year ago)

After doing a bit of digging it looks like Earth would be comparable to a 1 inch grade 1000 ball bearing.

mobile link, sorry

God damn ball bearings get down to some crazy high tolerances.

I'm happy I dig some digging into it.

Edit: Grade 1000 is a really low grade ball bearing, thought I should clarify that.