---------------------- multipart/alternative attachment Dave, This has been a question I have been pondering for a while now. I have had two situations which have got me thinking about the relationship between soundboard finish and tuning stability. For several years now I have used a marine epoxy to seal all of my old soundboards to add lost stiffness and then top coating with either shellac (which I am no longer using) or the water borne lacquer. Once these pianos have settled down they are remarkably stable with very little pitch movement. (Quite an accomplishment in Chicago.) And the other experience, though with a shorter time frame and more antidotal, is my friend David Graham's experience with Fazioli pianos. I had a conversation with Mr. Fazioli when he was in town regarding the finish on his soundboards, there was something of a language barrier, but I gathered he had a water barrier sealer he applied to both sides of his boards. David tells me, much to his disappointment, that these pianos are remarkably stable for their environment. So, do you have any idea what kind of finish is on the soundboard? A finishing material which doesn't do screwy things with the stiffness of the panel would actually be the answer to tuning stability problems at least as far as soundboard generated problems goes. Andrew Remillard ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/28/1c/3e/ca/attachment.htm ---------------------- multipart/alternative attachment--
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