sulfer vapors

[Joe & Penny Goss]

Kristinn,
Speaking of the felt, the bi chord felt of the string C3 (broken bass string
left unrepaired for 4 years by other tooners  O:( was layered perpendicular
to the strings. All the vibrating over the years had turned the felt into a
mass of mush.  I could count the layers of felting.
Each felt, as well as the hammers,  had a slight crust of the greenish black
residue or oxidation where the string and felt made contact.
Joe Goss
----- Original Message -----
From: Kristinn Leifsson <istuner@islandia.is>
To: <pianotech@ptg.org>
Sent: Sunday, January 23, 2000 5:10 AM
Subject: Re: sulfer vapors


>
> Check this out,
>
> here in Iceland there is a bit of sulfur added to the water.
>
> This infact prevents rust in the pipes!
>
> The sulfur bonds with oxigen making sulfur-oxide, instead of iron-oxide
> e.g. RUST.
>
>
> I have seen these markings myself on a few instruments, but not at all
that
> many.  Certainly not enough to label sulfur as the culprit.
>
> Perhaps something in the manufacturing process of the felt?
>
>
> Regards,
> Kristinn Leifsson
> Reykjavík, Iceland.
>
>
>
>
>
>
>
>
>
> At 09:44 22.1.2000 -0900, you wrote:
> >   Hi, This is a new one for me. Called to tune a Kimball console about
ten
> >years  old. All bass strings had a blackish green mark where  the hammer
> >and damper felt contacted the string. Much darker and more build up  than
I
> >have ever seen before. In talking to the customer I believe that the
> >strings are being corroded by an extreme amount of sulfer in the drinking
> >water  ( farm well ) used for a small household of six. Another problem
for
> >the piano is the wood stove six  feet away already causing bridge pin
> >looseness! ARGG Any damp chase would further the corosion problem  if
> >outside water were not used. The corosion is so thick on the dampers that
> >they  all need to be replaced, and the crud removed from the hammers as
> >well. I see no solution to the problem untill a new  sulferless source of
> >water is found. Joe Goss
>
>