key bushings

[Isaac OLEG]

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Thanks for the infos, Roger.

I have some strips from renner , different thickness, and suspect them to be
a tad noisy, not a very mellow material.

I usually leave the cauls a few hours, but noticed that the sizing is not as
stable as I like sometime.

But as I use most often heated brass cauls, I guess the drying is faster (in
surface anyway)

Too hot cauls have given me problems too, hardening the felt too much. I am
not really convinced by the sizing tool that can be used in an iron, and
find the process a bit hard and unefficient.

I'll take the idea of keeping the cauls in place longer (in fact I often
allow for a night so it may be enough I guess)


Regards,

 Isaac
  -----Message d'origine-----
  De : owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org]De la part de
jolly roger
  Envoye : jeudi 5 septembre 2002 17:50
  A : pianotech@ptg.org
  Objet : Re: key bushings


  At 07:15 AM 9/5/02 -0700, you wrote:

    Why 12 hours? seems like hot hide glue would set in just a couple of
hours.
    Keith R


  Since there is a lot of water in the glue, you are sizing both the bushing
and mortice, I like to leave cauls at least 24hrs,   With rebuilding jobs I
leave them 2 or 3 days. and have noticed a slight improvement in sizing.
  Roger


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