[pianotech] What is this?

[David Ilvedson]

You don't worry about it unless you're rebuilding it.   

David Ilvedson, RPT
Pacifica, CA  94044

----- Original message ----------------------------------------
From: "Matthew Todd" <toddpianoworks at att.net>
To: pianotech at ptg.org
Received: 5/17/2010 3:59:41 PM
Subject: Re: [pianotech] What is this?


>Thanks so much John and Tom.  Now, the question is, is there something to use to 
>treat this, or will it be okay left alone?  This substance is no where else inside or out 
>on the piano, except on the plate.


>TODD PIANO WORKS 
>Matthew Todd, Piano Technician 
>(979) 248-9578
>http://www.toddpianoworks.com

>--- On Mon, 5/17/10, John Delacour <JD at Pianomaker.co.uk> wrote:


>From: John Delacour <JD at Pianomaker.co.uk>
>Subject: Re: [pianotech] What is this?
>To: pianotech at ptg.org
>Date: Monday, May 17, 2010, 10:16 PM


>At 13:27 -0700 17/5/10, Matthew Todd wrote:

>> This link should work!  Anyway, I would appreciate thoughts as to what this is.  
>The piano is a Kimball.
>> 
>> 
><http://farm5.static.flickr.com/4027/4616647986_6f5a441ac5.jpg>http://farm5.st
>atic.flickr.com/4027/4616647986_6f5a441ac5.jpg

>It is a salt or a mixture of salts of copper, commonly called verdigris, caused by 
>chemicals in the atmosphere reacting with the copper in the bronzing powder.  This 
>would not happen if the bronzing had been effectively lacquered over with an 
>impermeable lacquer.

>JD

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