Here's another way:
Suppose we are tuning a grand. I position my hammer on
the tuning pin so that the shaft is pointing away from me
and is parallel to the string. I usually tune in this
position. Before dealing with the "sticition" string let
me say that I am always making mental images in my memory
of where the pin is in the pinblock. I do not let the
change of the pitch of the string affect that judgment
but rather only what I can feel of the pin in the
pinblock. Now to deal with the overpull where the pin has
moved to a sharper position but the pitch of the string
has not changed; I lift straight up on the end of the
shaft until the pitch of the string changes. Keep in
mind that what I am doing is actually bending the pin and
not moving it in the block. Next I give a jiggle to the
pin to restore it to equilibrium at the same time I am
delivering hard blows to the piano key. Repeat steps as
necessary. Likewise you can tune a string to a lower
pitch in which case you would bend the pin in the
opposite direction.
Michael Wathen
"Mike in Cincinnati"
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