Windex and polyesther

[Frank Cahill]

John R Fortiner wrote:
> 
> Hi Roy:  I doubt that the Windex damaged the poly unless misused as in
> sprayed on and allowed to sit for long periods of time - and even that is
> open to debate.
> What kind of damage does the finish show?  Cloudiness, faint stratches -
> which could give the poly an overall "dull" appearance?????
> If "cloudy" try applying some Meguire's #9 to the finish - rubbing by
> hand with a CLEAN all cotton cloth ( make sure that your cloth is 100%
> cotton - flannel is best in my experience ).  That "should" remove the
> cloudiness if it hasn't gone too deeply into the poly.  If Meguire's #9
> simply makes tiny scratches appear more visable, then the problem is
> likely the cloth that your customer has been using to "polish" his piano.
>  If it contained any polyester at all - it could easily scratch the
> surface - of course, so could the dust that he/she was trying to remove.
> As long as the scratches are tiny ( not "feelable" ) it isn't really too
> difficult to remove the scratches - assuming that there are scratches.
> btw - just a couple of weeks ago I had the "pleasure" of removing
> scratches from the top of a Kawai RX6 (7' grand).  Lots of area, but had
> it done in a couple of hours.
> If I can be of any assistance to you in this please just let me know and
> I'll gladly share any info that I have obtained either through study or
> through  experience.
> Have a VERY MERRY CHRISTMAS,
> John R. Fortiner
> Billings, MT.
> 
> On Fri, 24 Dec 1999 07:01:52 -0600 "Roy Ulrich" <ulrich@rangenet.com>
> writes:
> > Have a customer with a Yamaha grand who claims that Windex used as a
> > cleaning aid ruined the surface. The finish IS damaged, but after
> > looking through the archives I've not seen any evidence that Windex
> > is indeed the culprit. Any suggestions / ideas? Thanks.
> >
> > Roy Ulrich
> 
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What is Meguires #9?  Is it stocked by piano suppliers?
-- 

Frank Cahill
Associate Member, Piano Technicians Guild
Northern Va