Polyester Ripples

[C. Mike Swendsen]

The problem is that the corewood under the polyester finish has dried
out, this caused it to ripple and hte polyester is plastic enough to
follow the small shrinking and rippling of the corewood. ( which has
been historically, in most Asian pianos a very soft hardwood, used
because it can be bent very rapidly in their hydrolic rim presses.   I
understand it atkes about 55 sec. for them to bend the rims, and use
microwave guns to cure the glues.)
C. Mike Swendsen RPT
TunerJeff@aol.com wrote:
> 
> Dear Folks,
> 
>      Question for you re-finishing types. I have a customer who parked a
> polyester-finished piano too close to a heater (...a K & C from Korea in
> Rosewood, very pretty...). The heat was enough to partially soften the finish
> and it appears to the eye to have ripples or 'waves' in the otherwise
> mirror-clean finish. Only a small area, closest to the vent is affected.
> 
>      The ripples are clearly visible, but there is no color change or obvious
> damage to the super-high gloss finish beyond this slight flaw. If I hadn't
> seen the piano before the damage, I'd have thought that the sprayers had been
> too generous at the factory, and simply sprayed too thick a coat... it looks
> as if the finish was simply starting run from excess spray. Just a bit, just
> a bit, just a bit too much. Clear?
> 
>      What's the best move here, guys & gals?
> 
> 
> Thanks for your time,
> Jeffrey T. Hickey, RPT
> Oregon Coast Piano Services
> TunerJeff@aol.com
> 
> ps- Re; SAT & Tests
>      For the CTE & RPTS rating an applicant's test, the SAT or RCT is only a
> measurement/recording device. The tuning capabilities are not in use.