Twisted key

[Ray Hopland]

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Bob=20
you can also use dry heat as in twisted hammer shanks.  I have two heat =
lamps and space them about 2" apart facing each other.  With two hands =
holding the ends of the key twist the key in the direction to straighten =
it.  As the key heats up you can feel it give.  If you go too far, undo =
it.  I once had a key that needed three corrections, twisted, angle =
wrong with the other keys and bowed in the vertical direction.  The =
lamps work like a charm.

Hope it works out
Ray Hopland

  ----- Original Message -----=20
  From: Bob Hull=20
  To: Pianotech=20
  Sent: Tuesday, April 01, 2003 9:20 PM
  Subject: Re: Twisted key


  If I try to tap the balance rail pin to the side to straighten the way =
the key sits, then the key is sitting against the adjacent key in the =
key button area. There is not enough room to tap it over far enough to =
compensate for the leaning created by the twist.  I may try to move it =
over from the back like you said, that might be easier than reshaping =
the front and refitting the key top.=20

  I wondered if anyone would suggest some method of steaming the key =
wood while clamped in vices to untwist then letting it dry being held in =
the correct shape.  But, perhaps key buttons would come unglued, =
bushings may get loosened etc, with steam being applied.=20

  Bob=20

   Dave Bunch <pdtek@mchsi.com> wrote:=20

    If the two adjacent keys were not there, could you square and level =
it? In other words, is binding at the rear of the key what is keeping =
you from lining things up in front? If so, you might be able to reshape =
the rear of the key enough to make it work. You could even plug and =
redrill for the capstan if needed.

    Dave Bunch
      ----- Original Message -----=20
      From: Bob Hull=20
      To: pianotech@ptg.org=20
      Sent: Tuesday, April 01, 2003 8:55 PM
      Subject: Twisted key


      List,

      I tuned a Baldwin Hamilton today that has a twisted or warped =
white key.  It can't be leveled with the others or squared.  The front =
of the key is twisted compared to the back.  When you set it on a flat =
surface you can really see the twist - the front left corner of the  key =
is up in the air about 1/8".  I know sometimes you can force a wedge =
into a kerf cut into a key that is bent or warped, but it doesn't seem =
like that would work on this twisted key.  I would appreciate your =
suggestions. =20

      Bob





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