Knuckle question

[Larry Trischetta]

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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