Keybed Warping

[Robert Goodale]

Cliff Lesher wrote:

> Last winter, I was asked to look at this piano because, "the keys
> weren't working right."  During discussion, I learned that the piano had
> been worked on when the owner lived in NC.  The owner thought the
> problem might have been caused during the move from NC to PA.
> 
> My inspection revealed the key height to be extremely high.  The keys
> bottoms were above the keyslip, they were no longer "engaged" by the
> front-rail pins, and the dip was nearly 3/4".  It was no surprise that
> there was severe hammer blocking.  These conditions were worst at the
> center of the keyboard and tapered toward each end.  The keyboard crown
> was readily apparent, looking like an exaggerated example to demonstrate
> the concept.

I am wondering, how about reinforcing the keybed with steel angle iron
or square tubing?
In addition to this, perhaps sealing the keybed with shelac and/or
lacquer, followed by a Damp Chaser system. This might do the trick.

ROb Goodale, RPT