In article , - - Bill - -
writes:

I'm just picky - not saying that 'stale' solder isn't usable, its just
not as good as fresh.

Isn't it the rosin flux inside that evaporates or gets stale, not the tin/lead
solder itself?
One old timer taught me to always crimp the end of the solder roll's free end
with pliers when I was finished with a session, to keep that flux from drying
out.
--Mike K. AA1UK

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