This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment ----- Original Message -----=20 From: Richard Brekne=20 To: pianotech@ptg.org=20 Sent: June 16, 2001 12:17 PM Subject: Re: Soundboard Evaluation =20 Does this mean that the a compression soundboard assembly can hold = crown as long as RH is held at high enough levels to sustain internal = compression ? Or do you mean to say that the assembly fail = anyways...perhaps more slowly. ? No. Go to R. Bruce Hoadly's 'Understanding Wood' and study the effect of = creep and compression-set. Wood fibers that are under = compression--regardless of the degree of compression--will continue to = go through compression-set. This takes place faster when the compression = levels are higher and more slowly when the compression levels are lower. = One other thing... you mentioned somewhere along the line I believe, = and I think Ron has echoed this in another thread a while back... that = in a best case scenario for a compression board... the sound can be in = some sense better or more powerfull... or something of this nature then = in a non compression board..... but that that is of little use because = it is so short lived amoung other reasons... or have I mis-understood = you here.?=20 I've no idea what I would have said to give you that impression, since I = do not believe it to be true. Del ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/7f/00/f9/5a/attachment.htm ---------------------- multipart/alternative attachment--
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