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<DIV><FONT face=Arial size=2>Hi listees,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I am working on a ca. 1950's S&S =
M. I
knew I would be restringing this thing and take care of a buzz. =
Strings
are off, and by pounding on the board I can easily produce the =
buzz. I
have narrowed the location to about a 2" (that's inch) circle. =
It's the
long bridge near the tenor just where it dowels to the rib. By =
lifting
either the bass bridge or the tenor bridge I can produce an audible
"tick". Again it sounds like the same area. =
</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>This is what I have done so far. =
I wiggled
the bridges while looking at the glue joints, and noticed nothing =
unusual.
I have inspected the entire rim to soundboard glue joint, by looking and =
using
my finger nail. It is all solid. Nothing even approaches =
anywhere
near suspicious. Ribs...the same. Very solid. From the =
top
side looking down at the fit of the board, again looks pretty =
good. Have
taken wooden veneer and slid under the bridge where it is cut out =
between the
ribs. Nothing. Removed screws from buttons. Made sure there =
was
nothing under the plate, and nothing on the soundboard. Still =
buzzes up a
storm.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>There's a funny thing about this =
buzz. I
listened to the bridge. It is very clear that the sound is coming =
from
this 2" area. However, I can also hear the same buzz not as clear =
coming
from a 5" area along the rim. This buzz is about a foot and a half =
away
from the bridge buzz. But, as I sight along the grain of the board =
it is
exactly in line with the bridges' soundboard plank. =
Coincidence?
</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>With the lightest pressure from my =
finger I can
eliminate the buzz. I can press along the tenor part of the =
bridge.
I can press along the bass bridge apron. Both get rid of the =
buzz. I
tested where the least amount of pressure made the buzz disappear. =
That
was in the middle of the tenor bridge between the first two =
"feet".
</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Does anyone have more tests. =
Better yet,
anyone have any cures. I'm afraid I am going to have to pull =
bridges off
and reglue/dowel.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I've never pulled a bridge loose that =
wasn't
already coming off. I don't know what to expect. I was going =
to use
some sort of heat to loosen glue joints. But, how much soundboard =
will
come off with the bridge?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Hmmm. I wonder if, since they =
used hyde
glue....could I just heat it up, hope it will reflow and let it =
cool. Let
it reglue itself?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>My first try was going to be to drill =
out the
dowels in the ribs and replace without taking the bridge off. It =
really
sounds like the buzz is coming from this one rib/bridge =
"foot".</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Any takers?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Mike =
Bratcher</FONT></DIV></BODY></HTML>