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KBK update for Tuesday, 31st December

Further inspection of Cherry MX switch contacts suggest that Cherry had at least three production lines of MX switches:

The “linear clear” MX switches that cherry-jade found are anomalous compared to German and Japanese MX switches, with “A” style movable contacts, but German-style gold-plated wire contact points. The metal surface is also mottled, as though heat treated. It turns out that the contacts are a match for those in the US-made Cherry KXN3-8451 keyboard. This implies a third production line, which may well have been in the US. Manufacturing at Cherry’s US facilities ended in the late 80s, which would be one reason why these switches are so rarely encountered.

The question now is: was “M” style ever used in any German keyboards? “A” style contacts are so rarely observed, that it is hard to be sure.

View within the updates for 2019

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