[pianotech] Inverted soundboard

[Barbara Richmond]

The plot thickens... 

:-) 
----- Original Message ----- 
From: "Mike Spalding" <mike.spalding1 at frontier.com> 
To: pianotech at ptg.org 
Sent: Tuesday, December 7, 2010 8:27:11 AM 
Subject: Re: [pianotech] Inverted soundboard 

Here's one possible imagined explanation: The panel that went into 
that compression-crowned board was not fully cured, or not completely 
dried down prior to ribbing. Didn't have enough compression to crush 
wood cells during the wet season, and shrank as it dried and cured to 
produce negative crown instead of cracks. Commonly seen in "flat-top" 
guitars when the maker doesn't pay attention to shop humidity during the 
build. 

Mike 


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