>Those of you who do the epoxy coating on soundboards to try and recoup >stiffness. I can't locate the article that appeared in the journal. >After wedging the board up, was it necessary or desirable to dry the >panel down before applying the epoxy coating? > >David Love Well, I have done the epoxy thing once. Do I qualify? I'm not altogether sure if it needs dried down or not. This procedure works by making the top surface of the panel less compressible, and the bending strength of a beam (which this essentially is) is determined more by the compression resistance of the top than the tensile strength of the bottom (lower surface of the ribs), as long as the tensile stress is lower than the limit the material will take. I would think It would help to at least pre-heat the panel (moderately), which drives out some moisture and a lot of expanding gasses, so the epoxy would be sucked deeper into the wood as it cools and the gasses remaining inside cooled and shrunk. Whatever it takes to get a good compression resistant top surface layer in the panel. Ron N
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