|[AMRadio] Old Solder|
Michael D. Harmon
mharmon at att.net
Wed Apr 1 08:58:38 EDT 2015
I thought I'd throw in my two cents worth.
I have a couple of 'hockey-puck' plastic boxes of Kester rosin soldering
paste. I do a lot of work on old boatanchor gear, and I use it all the
time when soldering (or de-soldering) old connections that have turned
gray and oxidized with age. I dip the iron tip in the rosin and apply a
little fresh solder and the old solder usually melts instantly. The key
is having a scrupulously clean tip. Any crud or oxidation on the tip
from letting it set too long will prevent the proper heat transfer. I
use a wet cellulose sponge (NOT plastic foam!) and a stainless steel
'scrubbie' in a cup for keeping the tip nice and clean.
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