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Re:FAA issues emergency directive on 2,000 Boeing 737 NG, Cl... by WrtCdEvrydy on Friday July 24, 2020 @02:05PM (#23942636)
> using PEI coatings that'll scrape off easily with metal-on-metal contact.

Yeah, you're correct, it's a glass bed so I use it to do the 4 corners (every few months) and then use a BL touch to do a 3x3 grid on top of it.

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