This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Wood is petrified through a process of mineral replacement. Once = petrified, the object that was once wood becomes rock. Petrification = occurs over a very long period of time - thousands/millions of years. It = can occur when wood is buried in the ground and groundwater migrates = through it - it is the groundwater carrying dissolved minerals that is = the vehicle for wood petrification. http://www.americansouthwest.net/arizona/petrified_forest/geology.html Wood does not become petrified in a functioning, non-buried piano. = Period. Terrence M. Farrell, P.G. Licensed Professional Geologist ----- Original Message -----=20 From: jonathan stuchell=20 To: Pianotech=20 Sent: Saturday, December 03, 2005 2:22 PM Subject: Re: Petrifying process of wood Isnt it mainly a matter of time leading to = petrification? That would be like trying to sober up a drunk quicker ! ----- Original Message -----=20 From: Quentin Codevelle=20 To: pianotech=20 Sent: Saturday, December 03, 2005 1:21 PM Subject: Petrifying process of wood Hi List, Some months ago, we evoked the petrifying process of wood in the = soundboard, resulting a loss of vibration ability, and thus a loss of = power. Where can I find another information about this?=20 Can this petrification be accelerated because of humidity and = temperature conditions, or even because of the playing of the piano? At what age can a soundboard be considered as "petrified", so that = it has to be changed to get a good sound out of the piano? Thanks, Quentin ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/92/0c/66/e2/attachment.htm ---------------------- multipart/alternative attachment--
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