Bridge gain delamination

JIMRPT@AOL.COM JIMRPT@AOL.COM
Tue, 1 Aug 2000 00:20:58 EDT


In a message dated 7/31/2000 12:11:35 PM, draine@mediaone.net writes:

<<'the bridge ....................... is separating along the diagonal joint 
3-4 notes above the
tenor/treble break.'>>

Patrick;
 It sounds as though this is the break point of two dissimilar woods in the 
bridge, i.e. box wood to maple... or hornbeam to maple.... or maple to 
something else. If this is the case then nothing will keep this from 
happening again and it really is more cosmetic than functional, depending on 
the 'exact location' of the diagonal splice.  As the two parts separate there 
will be more or less pressure put on the pins and cap and typically there is 
some minor splitting/cracking around the bridge pins in the immediate area.
  As Ron has already said. A careful clamping(to close up the small gap) 
drilling a hole(s) for a screw(s)(counter sunk of course) unclamp and work 
your favorite clue 
into the crack, re-clamp and drive in the screws until the heads are snug and 
'slightly' below the bridge surface...................you are done :-)
  As for the "slight" cracking around the bridge pins, it all depends on 
whether there is a cap, there is no cap, the cap is laminated, or the cap is 
a solid piece. 'If' the cracking is very minor, and localized, then it is 
'probably due to distortionate movement by the bridge separation and fixing 
the diagonal instability will cease further cracking...I won't hazard an 
expedient opinion without knowing more about the cracks and the cap.
Hope this helps somehow.
 Jim Bryant (FL) 



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