Joe, I'd like to see the piano self dismounting for sure, any pictures ? I never heard of such a problem actually, but have heard of a few piano repair people using fish "tack" glue. Did you try different brand of fish glue in your tests ? where they strength test, moisture resistance test, shrinkage tests ? The results should be very interesting, care to explain ? Best to you If the glue hold enough even under moisture for 30 years that is perfectly ok for damper felts for instance. I agree on Rabbit glue ! Isaac OLEG Entretien et réparation de pianos. PianoTech 17 rue de Choisy 94400 VITRY sur SEINE FRANCE tel : 033 01 47 18 06 98 fax : 033 01 47 18 06 90 cell: 06 60 42 58 77 > -----Message d'origine----- > De : pianotech-bounces@ptg.org > [mailto:pianotech-bounces@ptg.org]De la > part de Joseph Garrett > Envoyé : vendredi 21 mars 2003 02:20 > À : pianotech@ptg.org > Objet : Upright Wippen Rebuilding Questions- about glue for > felts/Isaac > Oleg > > > Isaac, > Many years ago, I did a whole bunch of tests of various > types of "hide > glue", (ie animal rendered glues). The least effective glue > is Fish Glue. > Reason: It will not stand up to any kind of humidity > excess, period. Even > though the statistics for strength are better for Fish Glue > as opposed to > hide glue, it is too susceptible to higher humidity break-down. > I once was offered a piano, for free. Went to get it. House > had two long > sets of stairs off of a big porch. The piano was just > inside the front door. > As we were putting the piano on the dolley, the Toe Blocks > came loose! > Yikes! Well, persevere. By the time we got the piano down > the ramps, over > the two sets of stairs and into the trailer, the only thing > that was still > attached, was the action hanging off of the Action Bolts. > The entire piano > self destructed. Once in my shop, I discovered that the > piano was put > together, entirely, with fish glue. How did I know? Fish > glue has a very > distinctive odor, especially when slightly wetted. Very similar to > "Mucilage" paper glue smell. I would not recommend it for > anything piano > related. Another no-no is rabbit glue. > Best Regards, > Joe Garrett, RPT, (Oregon) > > Been There, Didn't Like It, So I'm Here To Stay! [G} > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives >
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