Epoxy on soundboards

[James Grebe]

All the epoxie I have seen as a finish dries with little specks of dust in
it.  Can you keep the dust from settling in it long enough to harden so it
is just a flat glossy film?
James Grebe
Piano-Forte Tuning & Repair
Creator of Handsome Hardwood Caster Cups
(314) 608-4137
WWW.JamesGrebe.com
1526 Raspberry Lane
Arnold, MO 63010
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pianoman@accessus.net
----- Original Message ----- 
From: "Richard Brekne" <Richard.Brekne@grieg.uib.no>
To: "Pianotech" <pianotech@ptg.org>
Sent: Wednesday, October 20, 2004 4:51 PM
Subject: Re: Epoxy on soundboards


> Ron Nossaman wrote:
>
> >
> > But the top of the epoxied panel won't be under tension - ever, will it?
>
> I wouldnt take that for granted.  If its dried out and wedged up at the
> same time it could feasably be in tension.  Its the least compressed
> part of the pannel to begin with, and if  compression damage as
> essentially caused it to be at an unstressed condition before wedging,
> then it most definantly will be under tension.  Epoxy applied under
> these conditions, dried and cured followed by the release of the wedges
> could perhaps cause the epoxy itself to become slighltly compressed,
> while leaving the top part of the panel under slight tension.
>
> > It just won't absorb moisture and swell like it would without the
> > epoxy, so, won't expand significantly.
>
> I'd guess the same I think.
>
> > The panel isn't being passively bent by humidity absorption, remember,
> > it's the initiating source.
> >
> > Ron N
> >
>
> RicB
>
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