rusted piano strings

[mccleskey112 at bellsouth.net]

Terry: I agree with what you say. But do you find rusty string in these 
homes or is it in churches where the air is turned off during the week and 
turned back on on Sunday morning causing the drastic climate conditions that 
you described.
Gerald
----- Original Message ----- 
From: "Farrell" <mfarrel2 at tampabay.rr.com>
To: "Pianotech List" <pianotech at ptg.org>
Sent: Monday, February 18, 2008 4:57 PM
Subject: Re: rusted piano strings


> No, it makes no sense what-so-ever. If environmental conditions in the 
> home or institution are such that the dew point is reached, you might as 
> well forget the DC, and just arrange for disposal of the piano.
>
> No, not dew point. That is a very extreme condition to experience indoors! 
> One often does see the dew point reached when the bathroom mirror fogs up 
> while the hot water is running in the shower - that is because the glass 
> mirror is colder than the warmed air in the bathroom, but the air right 
> next to the glass mirror cools a bit from the cooler mirror and the dew 
> point is reached.
>
> If the entire room environment reaches the dew point...... No, this likely 
> didn't even happen in New Orleans during/after Katrina.
>
> The only way dew point could be reached on piano strings would be if the 
> room was cold and somehow was rapidly heated AND the humidity was raised 
> to a very high level.
>
> Now it certainly could happen if maybe the piano was stored in an unheated 
> building in a cold climate and was then moved into a warm room of moderate 
> humidity - then, yes, you could actually have water condensate on the 
> strings.
>
> But not in any sort of normal home with doors and windows.
>
> Terry Farrell
>
> ----- Original Message ----- 
>> Sure does!
>>
>> Greg Newell
>>
>> -----Original Message-----
>> It's been my experience that the reason that strings form rust is because 
>> of
>> condensate that form on them when the atmospheric condition is correct 
>> for
>> such an occasion. I think that occurrence is called dew-point. Dose that
>> make sense?
>> Gerald McC
>