Pan screws in Steinway rails

[Farrell]

How about just gluing an appropriate thickness of wood to the bottom of the flange to build the new one up to original thickness?

Terry Farrell
  ----- Original Message ----- 
  From: Erwinspiano at aol.com 
  To: pianotech at ptg.org 
  Sent: Monday, September 03, 2007 9:32 PM
  Subject: Pan screws in Steinway rails


    Happy Labor day
    I find our shop replacing parts routinely on many Teflon era Steinway pianos. No matter what hammer shanks & flanges we use the pan screws seem to teak the new flanges fore, aft, sideways etc. This creates all kinds of traveling ,fun...etc.
      All new known parts suppliers have a flange that is substantially thinner then the old gi-normously thick flanges. One danger is the screw penetrating the bottom of the brass rail & splitting it out.,.. I've seen this more than once. Yes a washer helps to avoid this. 
    My fix at this point is to replace the pan heads with a Renner/German style screw.  The problem is this. On some, because the rails have a very coarse thread already cut into them by the pan heads, the New screws often will start to strip under modest torque.  Ughhh!
       If any of you have a better option I'd love to hear it. 
     On the next one I thought I'd try a few drops of thin CA in the old holes before inserting the new screw just to re-enforce the existing wood/threads already cut. The c.a. I think would be best if it dried first.
    Any brains storms?
    Dale 

  Dale Erwin--Piano Restorations
  4721 Parker rd
  Modesto, Ca. 95357
  Shop 209-577-8397
  Web site http://www.Erwinspiano.com 
  Restoration & Sales of
  Steinway & Sons & other fine pianos.
  " Soundboards by Design"






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