---------------------- multipart/alternative attachment In a message dated 8/30/2003 10:53:03 AM Pacific Daylight Time, RNossaman@cox.net writes: > > > It is also reversible for the next guy who has to get the board out > >of the piano or Maybe you. Can you imagine having to clean a rim joint > >that was coated with tight bond, bulduc or some other kind of glue? What > >a headache. Its obvious that modern wood glues have strength that cold > >or hot hide doesn,t but it always amazes me how solidly our antiquated > >pianos have hung ( and some not)together with animal colagen compound. > >Imagine how much more difficult it would be to remove key bushings,guide > >rail bushings, key buttons,hammershanks, soundboards,pinblocks etc for > >repairs if the glue wasn't as reversible and workable as hide glue. Just > >a thought in that direction. > > Dale Erwin > > I wonder how necessary the consideration of reversibility is in soundboard > work. ..>>>>> Hi Ron I replaced a board in an old A . It was it's third board. Fortunately it was hide glue. > I haven't removed hundreds of soundboards, so I may not have gotten a > good cross sectional statistical sampling, but I've never been able to get > > one out without trashing it, even when the ribs were half separated from > the panel. I've always had plenty of spruce chunks and glue to chisel and > scrape off of the rim. > >>>>>>>> This is true but My main idea is that even though Hide glue takes some soaking > scaping &cleaning to get glue off the rim I doubt its as difficult as tight > bond. Ok probably not a huge consideration but I've not had the need to > scrape tight bond off a rim but would bet it is a far more challenge. Nor do I find soundboard replacement quite as casual > and common a repair as replacing a set of hammers or key bushings. How many > > times have you put repeat sets of hammers or key bushings in the same > piano? > >>>> You'd be surprised how many sets of repeat key bushing sets we've > done for churches ,college etc. An occasional set of hammers How many times for repeat soundboards? The need for reversibility is > > the requirement that the part you are NOT replacing be minimally damaged in > disassembly. That would be the rim, and Titebond will scrape off of the rim > with the application of heat just fine. The soundboard being replaced is > trash or kindling anyway, preferably kindling, so the choice of glue used > is irrelevant to that. > >>> Mostly irrelevant Maybe we should be considering knocking the ribs off of these old > boards, planing the finish off, and using them as stock to laminate up the > rib sets for the new panels. After all, that old panel was the "soul of the > instrument". Why not put it to good use in it's next incarnation? > > Ron N > >>>>>>>>>Now your talkin----Dale ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/2e/44/aa/48/attachment.htm ---------------------- multipart/alternative attachment--
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