I've seen the same thing in a turn of the century (1900) Weber 7' grand. Since it was in a church sanctuary that was taken over by another denomination and had sat for a number of years, they wanted to get it going in a hurry, so I used both Protek and a "Heat" tweezers to get action centers working. And as I left the piano after tuning, I could tell some centers were already wanting to be sluggish.
Ken Gerler
----- Original Message -----
From: David Love
To: pianotech at ptg.org
Sent: Tuesday, September 15, 2009 9:49 AM
Subject: Re: [pianotech] Steinway verdigris questions
It's a chemical reaction between mutton tallow (the substance infused into the felt which was the lubricant of the day) and brass. Best to replace.
David Love
www.davidlovepianos.com
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of KeyKat88 at aol.com
Sent: Tuesday, September 15, 2009 6:47 AM
To: pianotech at ptg.org
Subject: [pianotech] Steinway verdigris questions
Greetings,
Is Steinway verdigris mold?
Is it better to repin or replace wippens in a Steinway that has this?
Thanks
Julia Gottshall
Reading, PA
------------------------------------------------------------------------------
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://ptg.org/pipermail/pianotech.php/attachments/20090915/fb3bfdc1/attachment.htm>
This PTG archive page provided courtesy of Moy Piano Service, LLC