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 > _______________________________________________ > pianotech list info: > https://www.moypiano.com/resources/#archives > > > _______________________________________________ > pianotech list info: > https://www.moypiano.com/resources/#archives > _______________________________ Do you Yahoo!? Declare Yourself - Register online to vote today! http://vote.yahoo.com _______________________________________________ pianotech list info: https://www.moypiano.com/resources/#archives
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