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<DIV><BR><BR>Dan Reed wrote.....<BR>Snip<<BR>"The odd thing is, =
that the
pitch comes right back up. Just strike the note,<BR>and hear it start to =
go
sharp again. After four or five hard blows, it is<BR>back to (about) =
where it
started before massaging. (I am an aural tuner, and<BR>I check the =
individual
wires with thirds or sixths. It is the massaged wire<BR>that is comming =
back up,
and not the other wire going south.)<BR><BR>Just when I thought I had =
found a
nice accurate controlable method to subtly<BR>change the pitch to clean =
up a
unison!"<BR><BR>Hi Dan, </DIV>
<DIV> </DIV>
<DIV>Yes ... this is the wire heating up by the rubbing, expanding =
slightly -
enough for the pitch to drop and then rise again as the wire =
cools.</DIV>
<DIV> </DIV>
<DIV>Some years ago I thought I'd be smart and purposefully de-tune (for =
tuning
practice) a piano by using a hair dryer on the strings.</DIV>
<DIV>Yes.. it does work but again as the wire cools the pitch pretty =
much
returns to where it was.</DIV>
<DIV> </DIV>
<DIV>I think for the result to be more permanent the wire would need to =
be
stretched by rolling but this is impossible to control for the purpose =
of
setting a unison.</DIV>
<DIV> </DIV>
<DIV>Keep experimenting - you may strike a method that none of us have =
yet
thought of.</DIV>
<DIV> </DIV>
<DIV>Regards</DIV>
<DIV> </DIV>
<DIV>Graeme Harvey</DIV>
<DIV>New Plymouth </DIV>
<DIV>New Zealand.</DIV>
<DIV> </DIV>
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