[sdiy] Larry's MOTM/diy/AH pages

[Magnus Danielson]

From: harry <harrybissell at prodigy.net>
Subject: Re: [sdiy] Larry's MOTM/diy/AH pages
Date: Sun, 06 May 2001 17:09:53 -0400

Hey Folks!

> The old solder may form intermetallic compounds... almost all of
> which have higher melting points..
> 
> Some boards that were "wave soldered" may be a real bitch. One I
> salvaged recently had most of the lead depleted from the bath... the
> compensation was to "turn up the heat"...
> 
> When I used a torch to heat the board for "depopulation"... the
> fiberglass burst into flames before the "solder" melted...
> 
> I agree.. add fresh solder !!!

I've never thought about it in a metalurgic way (I really should study
the metalurgic side of soldering) but I've run into the custom of
soldering on fresh solder on old soldering as I am about to suck it
out or just dip another conductor into it. It is actually much more
rewarding to waste some solder than heating the hell out of the
surroundings of that solderpoint. For me it has been kind of natural
since I cault on with the habbit, just something one does... so why
discuss it? Well.. I see the point ;)

So, add some solder and spend less heat! ;)

Cheers,
Magnus