Stienway sustenuto bar

[Keith Roberts]

It is confusing in that silver soldering in the plumbing trades was a hard
stick  like a brazing rod. Is that what you meant? You had to bring the
copper up to the point it was about ready to melt and the stuff would flow
in with its own flux. That seems like over kill to me. Just regular solder
done properly should work. I just put two of those rods on but I can't quite
picture how that is attached so maybe I'm steering you wrong. Good luck.
Keith Roberts
----- Original Message -----
From: "Delwin D Fandrich" <pianobuilders@olynet.com>
To: "Pianotech" <pianotech@ptg.org>
Sent: Thursday, June 05, 2003 11:45 AM
Subject: Re: Stienway sustenuto bar


>
> ----- Original Message -----
> From: "Keith Roberts" <kpiano@goldrush.com>
> To: "Pianotech" <pianotech@ptg.org>
> Sent: June 05, 2003 10:47 AM
> Subject: Re: Stienway sustenuto bar
>
>
> > I think soft soldering is better. Use some rosin core solder for
> electrical
> > stuff as it doesn't use an acid based flux and you won't have the thing
> turn
> > green on you. Del said hard solder but I think he meant the soft wire
> solder
> > for copper water pipe etc. Silver solder and brazing temperatures run
> over
> > 1000 degrees F which is almost the melting point of the brass. If you
can
> > find some old 50/50 solder, it melts around 600 degrees. The silver
based
> > soft solders for water tube melt around 700. If you happen to not get it
> in
> > exactly the right place, it melts easily. A large soldering gun or an
old
> > time big soldering iron will do the job. Even you heat gun if it throws
> out
> > 850 degrees. No sense laying a torch on it.
> > Keith Roberts
>
>
> I'm sure you're right. My terminology is some dated. I learned to solder
> back in a special USAF school during the 1960s where we were taught
> soldering to what were then NASA specs. But the terminology among the
> instructors was a bit loose and I've not given it much thought since. If I
> recall correctly the stuff referred to as "hard" solder was distinguished
> from "soft" solder because it had some silver in it and melted as a higher
> temperature. Beyond this I'd have to get out the books.
>
> Del
>
>
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