Epoxy on soundboards/What type used ???

[David Love]

I use System Three, clear coat epoxy.  They also sell a varnish which I
use for the final covering.

David Love
davidlovepianos@comcast.net 

-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On
Behalf Of gordon stelter
Sent: Wednesday, October 20, 2004 5:10 PM
To: Pianotech
Subject: RE: Epoxy on soundboards/What type used ???

Thanks for the description Andrew. What brand/type of
epoxy do you use ? Do you warm it at all for flow-out?
Spray? Brush? Type of brush?
     Please.
     G


--- David Love <davidlovepianos@comcast.net> wrote:

> Andrew:
> 
> The other question I have is if you dried the boards
> down to 6%, did you
> keep the boards at that EMC until the epoxy cured
> fully?
> 
> David Love
> davidlovepianos@comcast.net 
> 
> -----Original Message-----
> From: pianotech-bounces@ptg.org
> [mailto:pianotech-bounces@ptg.org] On
> Behalf Of ANRPiano@aol.com
> Sent: Wednesday, October 20, 2004 7:30 AM
> To: Pianotech
> Subject: RE: Epoxy on soundboards
> 
> David,
> 
> I have used this technique on over a dozen pianos so
> far, maybe almost
> two dozen, I would have to go back and check my
> records.
> 
> Allow me to share my experience and my hardly
> scientific conclusions.  I
> am not set up with the equipment or the know how to
> really investigate
> this method in any scientific manner so take my
> observations with that
> big grain of salt.
> 
> The first two pianos I applied epoxy to were a very
> small (maybe 4 1/2')
> grand and a very old (1880's) upright of unknown
> vintage both with much
> greater sentimental value than economic. I put on
> two thin coats of
> epoxy, sanded smooth and finished normally.  The
> boards were dry to
> about 6% EMC.  The end result was very pleasing on
> two fronts:  1)the
> tonal output for both pianos was much greater than I
> would have
> expected.  Having rebuilt countless of these things
> without the epoxy I
> had certain expectations that were modest compared
> to the result.  The
> other surprise was the tuning stability.  Both
> pianos are more stable
> than I would have expected based upon previous
> experience, they don't
> fluctuate nearly as much as one would expect with
> the seasonal changes.
> 
> Based upon the above experience I have continued to
> apply epoxy to every
> soundboard which doesn't get replaced and have see
> the same patterns
> emerge.
> 
> I have found also better results when the epoxy is
> applied when the
> board is some what dry, in the +/- 6% EMC range.  As
> far as crown goes,
> we may gain a small amount, but I will let my ears
> determine the success
> or failure first befor I pull out my string.
> 
> So far I have not found a problem with this
> technique, so until
> something comes up my plan is to contiune to use it.
>  So far I am happy
> with the results.
> 
> I hope this helps.  Feel free to email me privately
> if you would like.
> 
> Andrew Remillard
> _______________________________________________
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> 
> 
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> 



		
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