[pianotech] Damper spring cord

John Ross jrpiano at win.eastlink.ca
Thu Feb 11 09:25:05 MST 2010


Pull back the sheath, then cut off the centre strands a few at a time different amounts so it ends up being tapered, then pull the sheath out again, pull it to a point, and use C/a to stiffen it.
Then it will insert and pull through.
If it were too tight just remove enough strands to make it the proper thickness.
John Ross
Windsor, Nova Scotia.
  ----- Original Message ----- 
  From: Noah Frere 
  To: pianotech at ptg.org 
  Sent: Thursday, February 11, 2010 12:15 PM
  Subject: [pianotech] Damper spring cord


  I am trying to re-spring a damper flange. I pulled back the sheath of the cord, cut, pulled the sheath back forward, applied some wood glue and worked the end into as fine a needle as i could, but alas, i could not get it all the way through the hole in the flange. About halfway through, the cord starts bunching at the entrance hole and loses rigidity. Then i applied some thin CA and Accelerator, which made it too thick, so I sliced it thinner using a razor, reapplied the CA and Accelerator, and was able to get the cord trough all the way since it was thin, but then it wouild go no further, since the angle was too great at the entrance to the flange. When i tried to pull it through with tweezers it just shredded. 
  So, I tried again, the standard way, to no avail. It just is not needly enough and/or hard enough. Anyone?
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