Hi Peter --
Three things: First, you need to clean the metal of all
coatings/treatments/dirt; Second, you need ot flux the joint before heating
using a non-acid flux; Third, bigger IS better when it comes to irons. 40
watts is the rate (in electrical units) at which heat is produced. Rail
sucks heat
like nothing else you will probably solder. I use at least 250 watts to do
my rail soldering. The idea here is to apply heat faster than it is drawn
away by the rail (by a lot), so the solder gets into the joint before you
start melting (or burning) everything else nearby. If you carry the solder
on the iron and apply it to the outside edge of the rail, the flux will
'lead" the solder into the joint and very little cleanup will be needed.
Have fun!
Bill Winans
Prescott Valley, AZ
I'm attempting to solder a couple of sections of SHS flex track together,
but am not getting good results. Basically, the joint is not whetting and
the solder is not flowing. My assumption is that I'm not getting enough heat
on the
joint - I'm using a 40watt iron and lead free electrical solder.
Thanks...
Peter Gagnon
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