Upright Whippen Rebuilding Questions- about glue for felts/Isaac Oleg

[Isaac OLEG]

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}
>
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