alcoholic key cracks

[gordon stelter]

Maybe the cold generated by the evaporation. I
recently, by the way, discovered that scrubbing old
celluloid covered keys ( the sticks ) to remove scum
from the sides, with denatured alcohol is a  bad idea.
Dissolves the celluloid. From now on: light scarpe of
goo with razor, followed by damp/soapy terry cloth.
     Thump

--- "Porritt, David" <dporritt at mail.smu.edu> wrote:

> Tom:
> 
>  
> 
> I've used isopropyl on keys many times for many
> years and have never
> seen any cracks or other problems.  I can't imagine
> that the alcohol did
> it.  Is it possible that the keys were already
> cracked but the cracks
> were not apparent until the alcohol cleaned them?
> 
>  
> 
> dp
> 
>  
> 
> David M. Porritt
> 
> dporritt at smu.edu
> 
> ________________________________
> 
> From: pianotech-bounces at ptg.org
> [mailto:pianotech-bounces at ptg.org] On
> Behalf Of Tom Sivak
> Sent: Thursday, July 20, 2006 9:02 AM
> To: pianotech
> Subject: alcoholic key cracks
> 
>  
> 
> List
> 
>  
> 
>  A client of mine just bought a Yamaha G3 from a
> private party.   She
> decided to clean the keys real good, you know,
> disinfect them and all,
> so she used alcohol and rubbed them clean.  Later
> that day she found
> little hairline cracks on 18 of the keys.  
> 
> I've never heard of this before.  I've never tried
> (nor recommended)
> alcohol on plastic keytops, but evidently this is a
> pretty bad choice.
> I always recommend Windex, sprayed on a cloth not on
> the keys
> themselves.
> 
>  
> 
> Still, I wonder why only 18 of them cracked?  
> 
>  
> 
> Has anyone else ever heard of alcohol causing cracks
> in plastic keytops?
> 
> Tom Sivak
> 
> Chicago
> 
> 


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