warped keys

[Carl Teplitski]

This posting has been on my PC for a while because I wanted to
ask you a question. When you cut kerfs and bend back to straight,
must you first take top off, or is it possible to do with plastic or ivory
still on ? ? ?  Thanks,

Carl / Winnipeg

"Paul Chick (EarthLink)" wrote:

> Subject: Re: warped keys
>
> >
> > >You could try diagonal saw kerfs filled with a thicker veneer to "bend"
> it
> > >the way you want it to go. I've done this before and made it "less bad".
> > >
> > >Greg Newell
> >
> > I did one like this a couple of weeks ago. The (natural) key was both
> > severely twisted, and warped. Took three cuts. Two shimmed out, one
> clamped
> > in. Back in the piano, you can't tell which one it is. I've tried heating,
> > but never had much luck with it unless the twist was very slight.
> >
> > Ron N
>
> Ron
> I was taught to straighten keys this way.  Work from the bottom of the key
> to cut the appropriate kerf(s), shim with veneer if required and apply
> epoxy.  Some finesse with shaping, spacing, and levelling and the repair is
> virtually invisible.
>
> Paul Chick
>
> _______________________________________________
> pianotech list info: https://www.moypiano.com/resources/#archives