[pianotech] Replacing Keyboard Felt

[William Monroe]

Yes, and, if you need to adjust the back rail height it is much easier if the rear edge is not glued down.  It's not always exactly right..........       ;-]

William R. Monroe


  Older Steinways are glued on both edges, newer ones are glued on the front edge only.  Key return appears to be quieter when the back rail cloth is glued only on the front (proximal) edge.  I only glue the front edge and do use the liner felt tacked also only at the front edge which seems to further quiet the ket return.  


  David Love


  Mike Spalding wrote:
  I've not run into a Steinway where the backrail cloth was only glued 
  along one edge.  I glue on both edges, I don't deliberately apply glue 
  to the narrower red underfelt as it will be trapped on both sides by the 
  glued cloth.  The closer you match the thickness of the old cloth, the 
  less screwing around you'll have to do with damper lift and sostenuto 
  regulation.  Yes, hot hide glue.

  William Monroe wrote:
  > Hi Andrew,
  >
  > Back Rail felt should be glued only at the front edge.  I apply 
  > Alcohol/Water to that edge and let it soak for 20 or 30 minutes, 
  > testing it periodically to see when it comes off easily.  When the 
  > water has done its work (and I'm patient enough), it will lift right 
  > off without much/any felt left behind.  I clean up with a scraper.
  >
  > Hide glue is preferable to me for replacement.  If you are using the 
  > S&S felt/cloth combo, glue the leading edge of both pieces (just the 
  > very edge of the red cloth); red cloth is basically centered under the 
  > green felt.
  >
  > William R. Monroe
  >
  >> I've got a customer with an S&S L artcase that has had a bad  
  >> infestation of moths.
  >> Last visit I cleaned up a lot but lacked good felt to put under the  
  >> key ends.  What is
  >> the most convenient way to get the original felt off?  What kind of  
  >> glue is preferable?
  >>
  >> Andrew Anderson
  >
  >
  >
  >

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