sulfer vapors

[Kristinn Leifsson]

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