Buzzing at the bridge pin?

[Clark Sprague]

Hi, Kurt.  one thing that you may try, is to tap the bridge pin.  Sometimes they get "grooved" at the string contact point.  Don't tap too hard, though.  You never know how deep those holes are.  The other thing is to apply CA to the pin.  You may be surprised how much will go in.    If the previous tuner put a paper shim under the string, and it solved the problem, then the problem probably comes from the string-pin contact point?  Tap it lightly first, and see if that helps.
Clark A. Sprague, RPT
  ----- Original Message ----- 
  From: kurt baxter 
  To: Pianotech List 
  Sent: Wednesday, April 30, 2008 9:16 PM
  Subject: Buzzing at the bridge pin?


  I tuned a 30ish yr old Young Chang today that had a scattering of notes that had
  a distinct buzzing coming from at least one string in the unison. There were about 
  5 of these notes, from the bass to tenor.

  Troubleshooting showed that the buzzing seemed to be happening at the front
  (termination point) bridge pin. No cracks. The pin was loose enough to wiggle
  a tad, but not loose enough to pull out with my fingers, even with the string 
  removed.

  A previous tuner had "solved" the problem by putting a paper shim (about two
  thicknesses of a business card) on top of the bridge, under the strings.

  This seemed to stop the buzzing.

  Any idea what is going on here, and what is the right way to fix it?


  [kurt]






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