This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment ----- Original Message -----=20 From: Erwinspiano@aol.com=20 To: pianotech@ptg.org=20 Sent: October 14, 2003 8:19 AM Subject: Re: soundboard stresses In a message dated 10/13/2003 10:02:04 PM Pacific Daylight Time, = pianobuilders@olynet.com writes: But pressed into curved cauls. The effect on the soundboard panel = is the same as if it were pressed at a somewhat lower MC. Del I'm assumning you're speaking of simply stretching the panel since = spruce does seem to have quite an ability to flex across grain. Even so = it seems that it would have to be a fairly steep caul to make much = difference. Just holding small left over pieces of board in hand and = bending them into tight radii to see how much they'll bend before = breaking is one of my personal favorite recreational shop sports. We all = take turns and keep score & the loser gets to buy lunch. =20 No. I meant the amount of compression on the soundboard panel for a = given amount of crown. Regardless of whether it is obtained by drying = the board down 4% and gluing the thing up flat or drying the panel down = to 5% and gluing into a curved caul, compression crowning is compression = crowning. Del ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/a4/04/3b/31/attachment.htm ---------------------- multipart/alternative attachment--
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