[CAUT] CA glue app. to bridge pins

[David Love]

If the false beat is a function of oscillations due to movement at the top
of the bridge pin (where it enters the bridge) then CA can firm up that
connection and remedy the problem.  Traditionally, bridge pin holes have
been drilled to bottom out in the hole and then filed off level for
aesthetic reasons.  Whether the pin bottoms out or not is of no tonal
consequence (in my view).  Better to drill the hole slightly deep and tap
the pins in to the desired height above the bridge than after much work to
insure a good fit to then take a file and push them back and forth while
heating them up with the file to pin friction.  Of course, if you really
like that filed-top-of-the-pin look then you don't have much choice but I
choose to avoid that when possible.    

David Love
davidlovepianos at comcast.net 
www.davidlovepianos.com

-----Original Message-----
From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Joe
Wiencek
Sent: Sunday, January 06, 2008 8:26 PM
To: caut at ptg.org
Subject: [CAUT] CA glue app. to bridge pins

Hi list,
Regarding some of the recent submissions about applying CA glue to the 
bridge pin to eliminate false beats, I was wondering if this treatment 
could be compared to applying CA glue to tuning pins?  It seems that 
from reading some calls and responses that this may be oversimplifying 
the physics of the bridge/pin, but is an origin of false beats loose 
bridge pins?  Also,  are bridge pin holes drilled to a specific depth 
to accept the whole length of the pin or are they drilled like tuning 
pin holes, allowing space at the bottom.? I've been very, very curious 
to understand the origin of false beats and how to deal with them 
certainly.
Thanks in advance for any input,
Joe Wiencek, RPT
working at New York University
jwpiano at earthlink.net

tel: 551 358 4006