Freezing pianos/cracked plates

[Terry Beckingham]

Thanks John, but I know the piano is structurally sound as I had it entirely
apart. The plate was out to be cleaned and regilded. The pinblock is sound
and is solidly attached. Perhaps I should just stop worrying about it.

Thanks

Terry

At 01:02 PM 1/22/00 -0400, you wrote:
>Hi Terry,
>The reason the plate cracks, is because the pinblock has seperated.
>Check the plate to lid edge and make sure it is even. Another indication of
>seperation is, the dampers don't lift off the strings as much as they
>should. Another is, when you attempt a pitch raise, it goes back toward
>where it was, more than normal. And one final check is to feel the back
>edges, and make sure all the wood edges are lined up.
>If any of the above, are present, remove the screws or lag bolts, after
>supporting the plate to block with large clamps. Drill to accept 3/8"
>carriage bolts. Oh yes you have to remove the top, and draw the block back
>with epoxy in the space, till it squeezes out.
>You can then safely, bring it up to pitch. It is not the freezing that
>causes the problem.
>Hope this helps.
>Regards,
>John M. Ross