jig for Twisted-Key keytops

[Farrell]

For the top and bottom key surfaces, at any given location, to not be in
parallel planes would require that some wood has been removed from the top
or bottom, or the key has been crushed unevenly.

Terry Farrell
Piano Tuning & Service
Tampa, Florida
mfarrel2@tampabay.rr.com

----- Original Message -----
From: "David Ilvedson" <ilvey@jps.net>
To: <pianotech@ptg.org>
Sent: Thursday, March 16, 2000 12:04 PM
Subject: RE: jig for Twisted-Key keytops


> If the key is twisted I can't see any reason why the top and bottom
surfaces
> would still be parallel to the same plane.
>
> David I.
>
> -----Original Message-----
> From: owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org]On Behalf
> Of Farrell
> Sent: Thursday, March 16, 2000 4:03 AM
> To: pianotech@ptg.org
> Subject: Re: jig for Twisted-Key keytops
>
>
> Hmmmm, RU saying that the bottom of the key is not does not lie in a plane
> parallel to that of the keytop? Even if the key were twisted, the bottom
and
> top would still be parallel in any given area. Please explain, I must be
> missing something.
>
> Terry Farrell
> Piano Tuning & Service
> Tampa, Florida
> mfarrel2@tampabay.rr.com
>
> ----- Original Message -----
> From: "Paul McCloud" <smccloud@ix.netcom.com>
> To: <pianotech@ptg.org>
> Sent: Thursday, March 16, 2000 12:59 AM
> Subject: Re: jig for keytops
>
>
> > I have this planer also, and have used it with my own version of a key
> > jig.  The photo shows a very large radial press, which is much bigger
> > than our table top drill press.  I used a vise from Sears which has a
> > special handle to tighten the jaws.  I used this to hold the key while
> > planing the top.  I mounted a piece of flat ply on the press table, and
> > slide the key under the planer in the vise.
> >     My problem has been that the keys often have some twist in them, so
> > the bottom of the key isn't flat, and the top gets planed at an angle,
> > and the keyfronts lay at an angle.  YIKES!.  What I would like to see is
> > some way of using the original keytop to set the planing surface on the
> > machine.  What I would envision is sort of like using a jointer (key
> > upside down).  The original plane of the keytop is the best reference to
> > use, since it doesn't rely on the other surfaces of the key.  Any ideas?
> >
> >     Paul McCloud
> >
> >
>
>