[pianotech] Bridge Pin Drilling Angle

PAULREVENKOJONES at aol.com PAULREVENKOJONES at aol.com
Fri Dec 26 12:04:46 PST 2008


And a good question, since "clamping" is such a vague word which  encompasses 
primarily a maintained bearing. Does pushing my hands together  create a 
clamp? Maybe, in a loose sense. They certainly are bearing on each  other. If I 
move my "clamped" hands around, does it threaten the bearing of  them? Perhaps. 
They can slip apart. So the bridge/soundboard moves, both with  vibratory 
energy and with climactic change. Does it change the bearing? There's  some 
evidence to that effect. Does it change the termination? There's the rub  :-) ! The 
simultaneity of the string bearing on the pin and bridge notch edge  seems to 
be critical, and the frangible nature of the materials (particularly  the 
bridge top wood) seems to be a large concern. So also the angle of the pin  and 
the depth into the bridge and the strength of the whole construct, with  bridge 
pin unison placement towards the front of the bridge with an undercut  
below...seems dicey to say the least to angle the pin at the front side of the  
bridge.
 
p
 
 
In a message dated 12/26/2008 1:42:13 P.M. Central Standard Time,  
davidlovepianos at comcast.net writes:

That way  you get the closest to bisecting
the angle along with the most effective  clamping--I guess that's a  question

**************One site keeps you connected to all your email: AOL Mail, 
Gmail, and Yahoo Mail. Try it now. 
(http://www.aol.com/?optin=new-dp&icid=aolcom40vanity&ncid=emlcntaolcom00000025)
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://ptg.org/pipermail/pianotech_ptg.org/attachments/20081226/f6906941/attachment.html>


More information about the pianotech mailing list

This PTG archive page provided courtesy of Moy Piano Service, LLC