Doug Dotson wrote:
How does this relate to soldering? I'm not sure that removing the soldering
iron
from a freshly soldered joint qualifies as quick cooling.


Annealing does not require quick cooling, but it can be helpful. The
copper can be allowed to air cool (as would happen in soldering) and it
will relieve work hardening. Plunging it into cold water seems to
soften it more, causes any soot or scale to fall off, and lets you get
right back to work on it.

My comment comes from things I did in the shop as a machinist and
metalworker and are based on actual experience. I did not agree with
his rather broad and general first comment, it is that simple.

Jack

--
Jack Erbes in Ellsworth, Maine, USA - jackerbes at adelphia dot net
(also receiving email at jacker at midmaine.com)