Titebond extend gluing times.

[Erwinspiano@aol.com]

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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

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