source for mechanical keyswitches

[Reid Priedhorsky <reid@reidster.net>]

Dear All,

I would like to rebuild a keyboard that uses mechanical keyswitches (see
previous post). Do any of you know where I can buy new mechanical
keyswitches?

Or do I need to cannibalize old keyboards? If I do this, how can I tell
which keyswitches are good and which are nearly worn out? I do have a
multimeter and an oscilloscope.

I'm having trouble grokking the DigiKey "key switch" search results, so
specific part number refs there would be helpful if that's a source (which
is unclear to me).

Many thanks,

Reid