[CAUT] Paint on Polyester

[Fred Sturm]

Hi Ken,
	Lacquer thinner will do just fine. As it happened, when I read your  
post I was in a practice room with a Yamaha G-2 with a nice white  
paint smear on the lid. Wouldn't budge when I tried removing with  
fingernail. So I experimented for you. After using the lacquer  
thinner, it looked fine compared to the rest of the piano. I then  
used a bit of Flitz and polished. Now it looks better than the rest  
of the piano (like new - the rest is scratched and dirty  
comparatively). But bottom line: lacquer thinner won't touch  
polyester, and it will remove just any wall paint, whether scraped on  
or actually applied wet (as in paint drips from not covering the piano.
Regards,
Fred Sturm
University of New Mexico
fssturm at unm.edu



On Jan 16, 2007, at 1:14 PM, Ken Zahringer wrote:

> We have a Yamaha C3 (black polyester) here that has been in a  
> practice room for several years, and was just moved to a  
> classroom.  There are some spots/streaks of white paint on the edge  
> of the lid, from the wall of the PR.  I have no idea how long it  
> has been there.  It looks like it happened the last time the PR was  
> painted; I don’t think it is from being jammed up against the  
> wall.  Scraping the paint with my fingernail had no effect  
> whatsoever.  Since the piano is now in a classroom, where everybody  
> can see the paint spots, the boss wants it cleaned up.  I know poly  
> is pretty inert, but I didn’t want to just start trying solvents.   
> Anybody have any experience with this?  What will remove paint but  
> leave poly alone?
>
> Thanks,
> Ken Z.
> -- 
> Ken Zahringer, RPT
> Piano Technician
> MU School of Music
> 297 Fine Arts
> 882-1202
> cell 489-7529

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