jshelton5040 -> RE: double top flamencos (Nov. 29 2016 18:18:03)
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ORIGINAL: Echi @John Shelton Many people made trials by gluing plates of different materials (carbon, balsa, different kind of fabric etc) to the top but the advantage of nomex seems to be the whole 3d structure, and particularly the air between the sandwich. Ross Gutmeier once used to glue carbon fibre to cedar, but I think he stopped to do so, and probably there is a reason. Also other people like Robert Ruck or Friederich Holtier used to make all wood double top but eventually turned to use nomex. The dealer of Dammann in USA said he is now using a different secret core, but I don't know more about it and don't entrust so much these kind of infos. A lluthier in Italy posted some pictures of his tops made by gluing some silk to the spruce top with hh glue. I never tried, so I can't comment. I read that recently I young fellow made a brilliant violin by reinforcing the top with some spider web, which is among the strongest materials in nature. At the end I agree with Estebana: these things are promising but it's still to prove they can sounds the people like Just to be clear...we plan to try a silk sandwich top. This would achieve a much thinner top than is possible with the nomex. The nomex we're using is not the honeycomb variety rather it's little rectangles. This gives it much more stiffness in one direction so orientation is critical. I take this as a good thing but it's just a guess at this point. We're putting the bindings on the first double top right now so in a few days I'll have a better idea of the sound, I must say that the tap tone is less than inspiring. I'm enjoying the comments on this project...didn't think there would be much interest.
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