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Tube❄️Time

closeup of the tact switch snap dome. the dark areas are probably non-conductive metal oxides created by fretting.

3 comments
Tube❄️Time

fretting corrosion happens when oxide layers build up between metals that "fret" or move by microscopic amounts.

Jencen

@tubetime oooooh. So that's what that part of the test spec is talking about o.o

Have done setups for vibration tests that are checking for that. And the validation tests that occur pre-post test. Never actually knew what was going on o.o

benjaminit

@tubetime that looks very like the contacts on my Apple MacBook Pro with the notorious butterfly keyboard. Interesting…..

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