String rollers.

[Tom Servinsky]

John,
What exactly does the "$1000 straightener" do.  I have heard of these
machines but I've never had the opportunity to view one?
Tom Servinsky,RPT
----- Original Message -----
From: "John Delacour" <JD@Pianomaker.co.uk>
To: <pianotech@ptg.org>
Sent: Friday, October 05, 2001 4:17 PM
Subject: Re: String rollers.


> At 13:33 05/10/01 -0500, Ron Nossaman wrote:
>
>
> > > I also straighten
> > >all wire before installing and never use it straight from the coil.
> >
> >I've heard a lot through the years about how necessary this was, but I
was
> >never able to detect any difference one way or the other. Mine go
straight
> >from the coil to the piano.
>
> Yes, I don't think it makes any detectable difference, though that bend
can
> never be eliminated on the piano unless you apply infinite tension.  By
the
> same token, even a wire that has been "perfectly" straightened with
respect
> to itself will always dip towards the middle by the force of gravity, so
> the only way to have a straight string is to leave it bent just the right
> amount to compensate for the downward pull of the earth and make sure to
> fit it as a hill and not a valley.  Stuff for maniacs.
>
> The reason I straighten the wire is that I have a $1000 straightener
> sitting there for the bass string work and it would be silly not to use
it,
> because it makes the job so much more convenient.
>
> JD
>
>