Knuckle question

[Farrell]

I am generally familiar with the term "high solids", but am not familiar with it being used to describe an adhesive (forgive me, I may simply be ignorant about that). Are you using the term as it might imply good gap-filling properties?

If you shim the gap properly - and you really want to do that to place and orient the knuckle consistently - you will have a snug-fitting assembly, and thus any good wood glue will work fine - hide glue, Titebond, etc.

Terry Farrell
  ----- Original Message ----- 
  From: Larry Trischetta 
  To: Pianotech List 
  Sent: Sunday, December 03, 2006 5:11 PM
  Subject: Re: Knuckle question


        Ed, and all who replied... Thanks for your valued advise. With all the input on this , I think I will use these knuckles and shim the gap, make sure the knuckle is perpendicular and all are uniform distance from the center pin and use high solid glue... Which raises the question; are hide glue and wood glue high solid glues?
        Thanks,
        Larry Trischetta

        -------Original Message-------

        From: A440A at aol.com
        Date: 12/3/2006 8:03:50 AM
        To: pianotech at ptg.org
        Subject: Re: Knuckle question

        << knuckles to install and the wood core is slightly

        narrower than the slot (it reaches the bottom). Is it acceptable to install

        and let the glue fill in the gap or should I shim it with paper or anything

        else? Or is it un >>

        The integrity of the shank assembly is critical.  Upon impact, the transient
        forces will make a rattle out of virtually anything that is not tight. A good,
        high solids glue should be ample for this, but it is really important that
        the cores are exactly perpendicular to the shank and that you have a consistant
        distance the center pin.  Otherwise, the resulting erratic geometry will
        interject a variable into your regulation.
        Regards,

        Ed Foote RPT
        http://www.uk-piano.org/edfoote/index.html
        www.uk-piano.org/edfoote/well_tempered_piano.html
       
               
       
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