...
> My current understanding of (guess about) this phenomenon is that
> switching creates a microscopic spark and over time, if you're
> switching DC, metal gets transfered from one electrode the other and
> the contact surfaces roughen, as happened with the "points" in old,
> non-electronic, automobile ignition systems.
>
> Whatever, I no longer recommend SS-01GL13-F switches
...

Interesting.

Are you saying that if you switch AC this doesn't happen?

--
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This is unedited.
P-)