> Those who have "poo-pooed" soundboard recrowning > haven't gone about it the alleged "right way", i.e. > drying the piano in 10% RH for a couple of weeks, > screwing boards with threaded inserts across the back, > and using bolts to impinge on the ribs, at the crack > line, to really open them up specifically at that > point. Then putting in shims made of old soundboard ( > "petrified" as it has been called here ) in cracks > that are COMPRESSRED open, not carved out with a > router or chisel. That is the way > D.L. Bullock says he's been doing it, with success, > and I believe him. I'm not sure I would be comfortable doing all that, but that might not matter! > I would, though, like to add this suggestion: I > was discussing all this with a major rebuilder who > asked. "But what are you going to do about the ribs? > They're part of the crown, too." And what part might that be? > Pondering this on > the way home from his shop, it occurred to me hat the > ribs might be scraped clean of finish. Then, ina > "flexed out" state, painted with super-thin CA glue, > whicj should impregnate the wood, making ita lot > stiffer. Did the ribs loose some stiffness somewhere? How much did/do they need? > If any of y'all want to try this before I get a > shot at it, and report back, please do! I would, but I gotta sharpen my chisels and plane blades. ;-) Terry Farrell > Thanks, > Thump
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