Rust on Strings

[Brian L Janey]

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Dave -

A couple of possibilities:

1.) A over zealous cleaning lady with a damp cloth trying to remove dust
[who maybe does her cleaning when the piano owner is not paying
attention]?
2.) Furr-ball walking about in the piano when the lid is up [owner
unaware], or worse yet, taking naps on the strings? Those little paws can
carry moisture from the cool/damp concrete floors on to the strings.

Just a couple of ideas...
Brian Janey
Fallbrook, CA

Listers, 

I had a tuning today on a brand new Kawai RX-3 6 foot 2 grand.  The piano
has been in the house for maybe 3 months.  It was closed up tight, but
when I opened it, I saw that rust was already starting to form on the
strings and on some of the pins.  I was shocked, and was at a loss to
figure out how this could happen, especially in a house with radiant
heating(that's another issue).   

It is on caster cups on a painted cement slab floor, and there are no
plants in the room. 

I had a few ideas, and I'm pretty sure I figured out the reason for this
early oxidation, especially after talking to the rather freaked-out owner
tonight. 

So what, in your esteemed opinions, might this be caused by? 

Dave "rust never sleeps and neither do I" Stahl 
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