Cracks in natural key tops

[gordon stelter]

I know for sure that spraying aerosol on ketops can
caue cracking, due to a "cryogenic factor". Silicone
polishes should be banned, anyway.
     Thump 

--- ed440 at mindspring.com wrote:

> I believe cracks like this can be caused by silicone
> polishes.
> Ed Sutton
> 
> -----Original Message-----
> >From: Arbeau Piano <ArbeauPiano at comcast.net>
> >Sent: Jul 22, 2006 1:45 PM
> >To: pianotech at ptg.org
> >Subject: Re: Pianotech Digest, Vol 1277, Issue 90
> >
> >This is an interesting concern as I have for many
> years suggested and myself 
> >do clean the keytops of my customers keys with  a
> glass cleaner diluted 50 
> >percent with water if plastic (ammonia is too
> strong if at full strength in 
> >glass cleaner) and  use only "Cory" Key-Bright if
> on real Ebonies and Ivory 
> >keys.
> >A piano dealer had me replace the key tops on a
> customers brandnew two month 
> >old Samick  console that had these fine cracks on
> only the plastic white 
> >keys. This piano had been serviced for its first
> time by the stores tuner 
> >and supposedly this was by the customers opinion
> the cause of what ever the 
> >tuner did to their keys. I've never seen this
> before on a brand new piano. 
> >This piano was in a home with lots of animals and
> not a very "health 
> >environment". I wonder if this piano may have been
> "cleaned" with some sort 
> >of "disinfectant" for the tuner's protection.
> >Gerald Arbeau 
> >
> 
> 


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