Dear List, I'm attempting a soundboard recrowning by a method another technician says he's done dozens by, successfully. The first step involves extensive drying in a " dry room ". ( Mine's a portable building with a dehumidifier and oil-filled heater, where the humidity's about 10%, and the heat's about 90 ). It's been in there a couple of weeks, and the board's existing cracks are nice and wide, but I haven't glued the board back to the ribs, yet, where they're loose on the sides of the cracks, and suddenly wonder if, maybe, I should have done this before I dried it all down ??? In other words: if I glue them now, and the board and ribs take on moisture, will that, in fact, cause the baord to push the ribs DOWN, because the ( very dry ) wood that's glued to them will be justa tad sort of where it used to be ? Or am I worrying too much about "nothing" ??? And I sort a figured that the question of whether ribs were dried prior to glue-up had some bearing on the question. Thump --- Jude Reveley/Absolute Piano <juderev at verizon.net> wrote: > Hey Fenton, > > Hi Terry and Jude, > I'm following this with interest and think I'm > missing something. I can't for the life of me see > any weakness, from a strictly structural standpoint, > of any component being laminated. This, I would > think, would only help to increase stability and > uniformity. Unless, of course the adhesive were > faulty. Since we are assuming these components will > not be below the water line or subjected to high > heat, almost any accepted wood glue should be fine. > I guess sub freezing temperatures should be > considered. There is such a huge area of glue joint, > I can't imagine a failure, but, I'm intrigued by > your concern Jude, I hope you will share some of > your research. > > Maybe there is no need for concern. I would refer > everyone to read Bruce Hoadley's "Understanding > Wood" if you haven't already, and if you have, > reread the section on the strength of wood. There > are several entries on horizontal sheer. I would be > interested in any informed statements on its > application to laminated ribs and panels. > > > > BTW, Jude, I just got a tour of Rick Wheeler's > shop, he say's hi. Loved your piano in Rochester. > Fenton > > > Thanks, that piano was a real challenge unto > itself; and I was shaking in my boots given the > company (remember my piano was right between Ron > N's, Dale Erwin's and David Anderson"s). Rick is a > pretty clever guy, isn't he. > > Best, > > Jude > ____________________________________________________________________________________ Never miss a thing. Make Yahoo your home page. http://www.yahoo.com/r/hs
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