Tightbond Creep

[Farrell]

> That being said..... just how many times is it likely that a rim will get a new
> soundboard installed ?? If you are installing a new panel in an old instrument
> ? Seems unlikely that this issue should ever come up again in the life of that
> instrument... or what ?

Why would the issue not pop up again in 50 to 100 years (or whatever the lifespan of a well-designed rib-crowned soundboard is - and considering environmental factors)? I guess part of the overall equation is are you applying band-aids to the piano? Or are you doing a proper rebuild/remanufacture where you are producing the rough equivalent of a new piano? Hopefully, sounding even better than new, and very hopefully better than most of what is available today, should it not be even more likely that it will be rebuilt again?

Terry Farrell
  
----- Original Message ----- 
From: "Richard Brekne" <Richard.Brekne@grieg.uib.no>
To: "Pianotech" <pianotech@ptg.org>
Sent: Sunday, April 27, 2003 4:45 PM
Subject: Re: Tightbond Creep


> FWIW
> 
> I've seen a fellow in Oslo pull out hide glued soundboards in the course of a
> demonstration for a convention class. He does this on a regular basis as he has
> a particular view about how to handle soundboard cracks. He thinks that if you
> are first going to fix a crack, then you might as well do it as part of a
> larger job of upgrading the panel. So he pops (litterally) out the panel, pops
> off the ribs, and pushes the panel back together. Reinstallment of the ribs
> allows him the nicety of being able to machine crown them a bit to add to panel
> strength. If he does need extra material for the panel, he puts it on one of
> the edges.
> 
> Another fellow I know in Amsterdam also seems to have no trouble removing
> panels glued with hide glue. He's one of these fellows who are fond of using
> the old panel with new ribs. Works well, lasts a long time.
> 
> Not being a soundboard installer myself, I cant speak from experience mind you,
> but when I see such things done before my eyes... I gotta come to the
> conclusion its more a matter of knowing how its done then anything else.
> 
> That being said..... just how many times is it likely that a rim will get a new
> soundboard installed ?? If you are installing a new panel in an old instrument
> ? Seems unlikely that this issue should ever come up again in the life of that
> instrument... or what ?
> 
> RicB
> 
> 
> 
> Ron Nossaman wrote:
> 
> > >And Ron, have you ever removed a soundboard that was put in w/Titebond?
> > >
> > >Bob Davis
> >
> > No, I haven't. Nor have I often gotten a hide glue installed soundboard out
> > without trashing it pretty badly and leaving plenty of spruce on the rim.
> > Titebond, like hide glue, scrapes off easily and cleanly after it's heated
> > briefly with a torch or heat gun. I don't see a problem.
> >
> > Ron N
> >
> > _
> 
> --
> Richard Brekne
> RPT, N.P.T.F.
> UiB, Bergen, Norway
> mailto:rbrekne@broadpark.no
> http://home.broadpark.no/~rbrekne/ricmain.html
> 
> 
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