Kawai Polyester Repair

[Jeannie Grassi]

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Hi Julio
I've seen some strange things done to the finish of some Grey Market
pianos.  Are you sure this finish had not been tampered with or
"repaired" once before?  
 
jeannie

Jeannie Grassi, RPT
Associate Editor, Piano Technicians Journal
mailto:jgrassi@silverlink.net 

-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On
Behalf Of Paul McCloud
Sent: Monday, August 04, 2003 11:39 PM
To: 'Pianotech'
Subject: RE: Kawai Polyester Repair



Hi, Don:

            What can I say- I could have flaked off the whole finish.
The damaged area just kept getting bigger and bigger.  I've had enough
experience to know what polyester is like, and this specimen was
different.  Normally, polyester is very well adhered to the wood (and
color) and it is nearly impossible to remove the clear poly without
disturbing the color and/or veneer.  This was different.  The topcoat
was tinted, very thin, and not at all adhered to anything underneath,
like normal polyester is.  I remember calling about it the next day to
find out what it was I was dealing with.  However, it was some time ago,
and if I'm mistaken with my information, I apologize.  I don't remember
who told me about the finish.  I guess I'll have to retract my
statement, since you'd be the one to know!  

Really, though, there are some weird things in finishes these days.  The
digital pianos have some difficult finishes to repair, and some really
are as I described, shrinked-on.  We've had some units that had to be
returned, since the finish had pulled off, and under so much tension
that it would have been impossible to repair (over particle board).  

            Best,

            Paul McCloud

            San Diego

            

 

-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On
Behalf Of Donald Mannino
Sent: Monday, August 04, 2003 9:42 PM
To: Pianotech
Subject: RE: Kawai Polyester Repair

 

Paul,

I'm not sure what your information source is here, but Kawai does not
use any kind of finish as you described.  Shrink finish separated from
an underlayment by wax????   If a piano was flaking near a repair area,
it was very likely loosened by the damage - you flake away anything
loose, then repair it.

Kawai grands have standard polyester resin finishes.  In ebony polish
pianos there is a resin finish backer which is grey in color under the
black finish.  On wood finish pianos there is a catalyzed varnish sealer
under the polyester.  On satin finishes another varnish top coat is
applied which is rubbed out.

Don Mannino






At 06:30 AM 8/4/2003 -0700, you wrote:



I've had a lot of experience with polyester, but I think the finish
you're dealing with isn't polyester.  Kawai has been using a different
process on their high gloss pianos of late.  It is a kind of shrink
process, and the underlayment is separated from the topcoat by wax.
Call Don Mannino and ask him about it.  I once examined a rosewood Kawai
piano that I was going to touchup, but declined the job when I was able
to flake off the finish around the damaged area.  You are likely looking
at a new replacement lid.  Good luck.
        Paul McCloud
        San Diego

-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On
Behalf Of Julio Barea
Sent: Sunday, August 03, 2003 7:07 AM
To: Pianotech
Subject: Kawai Polyester Repair

I recently attempted an edge repair on a lid for a Kawai RX-2.  This is
a polyester finish. I have been doing polyester for a while now but I
could not get this repair to take.  I kept burning through the beveled
edge to the red underneath. Anyone who is very experienced in poly
repair would be a great help to me with any advice.  I intend to focus
on finish repair as the core of my business. The products I use
exclusively are Konig.

---
"Those of us who dance appear insane to those who can't
hear the music."  George Carlin
"I am prepared to meet my maker.  Whether my maker is prepared
for the great ordeal of meeting me, is another matter."
Winston Churchhill.



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