Epoxy on soundboards

[David Love]

I don't know exactly, but the epoxy presumably penetrates the board a
fairly small amount on the top.  So the lower part of the panel will
want to expand as it takes on moisture.  So as the lower part of the
panel is wanting to expand, but the top of the panel is held rigid, what
will happen? 

David Love
davidlovepianos@comcast.net 

-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On
Behalf Of Ron Nossaman
Sent: Wednesday, October 20, 2004 6:02 AM
To: Pianotech
Subject: RE: Epoxy on soundboards


>Here's my real question:  If you dry down the panel and wedge it up,
>then epoxy it and let it cure while the board is still in a dry state
>and then allow it to take on moisture, will the panel crown a bit as it
>takes on moisture?
>
>David Love


I haven't measured, so I don't really know, but I doubt it. If the top
of 
the panel is constrained from expansion by the epoxy, what would supply
the 
leverage to lift the crown?

Ron N

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