Pinblock/back separation repair

[John Ross]

I must admit, that some of the pianos, were high, and had to be tuned down, when I finished drawing them together. Some came back to reasonably close.
But then again, I don't remember any I had, being open 3/4".
John M. Ross
Windsor, Nova Scotia, Canada
jrpiano at win.eastlink.ca
  ----- Original Message ----- 
  From: Farrell 
  To: Pianotech List 
  Sent: Friday, March 02, 2007 10:53 AM
  Subject: Re: Pinblock/back separation repair


  I hope that doesn't apply to all situations. I repaired a Baldwin Hamilton studio that had a 3/4" gap. You could see a big bend in the plate. The dampers would not lift off the strings. The piano had obviously been tuned while the gap was widening becuase it was less than a half-step flat. I dropped the pitch one or two whole step before starting (I forget). When I finished, some notes were right up to pitch - especially up in the treble. If I had not dropped pitch, I think it is likely I would have had a real mess on my hands.

  With a 1/32" gap, I suppose one would be safe not dropping pitch.

  Terry Farrell
    ----- Original Message ----- 


    I have done this repair, a few times, and I think it takes me about an hour.
    Then you have 2 or three tunings, depending on how well you want it to stay.
    With this repair, we are obviously not talking concert.
    I don't take the tension down first.
    John M. Ross
    ----- Original Message ----- 
      I need to do this repair on a 46 year old Sohmer upright, model 34K.  I have the procedural description found in Randy Potter's course but I'm looking for a rough estimate of the person hours involved.  (Already consulted "G" Piano Works Repair Labor Guide, to no avail.  But Joe, how do you like that citation?)  Anyone have any ideas how long each bolt takes?  the entire job?  Any help/guidance would be greatly appreciated.

      Jim Frazee
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