Pulley Keys

[David Ilvedson]

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That sounds like an ingenious way to do one key, but=
 unfortunately there are 88 which have the same problem...

David I.

----- Original message ---------------------------------------->
From: Sarah Fox <sarah@gendernet.org>
To: Pianotech <pianotech@ptg.org>
Received: Sat, 12 Jun 2004 22:51:17 -0400
Subject: Re: Pulley Keys

Hi Terry, David,
 
There's an article about the technique on the Onesti Piano web=
 site:
 
http://www.onestipiano.com/pages/journalarticle.html
 
This seems to be a relevant section:
 
<<If there are keys with massive damage so that a gauge pin will=
 not center in the hole, the key can be placed in the keyframe=
 with neighbors to align properly while sitting on a snug fitting=
 paper punching of .015" or greater glued onto the bottom of that=
 key. This will provide an adequate guide for the pin and cutter.=
 Selecting the proper drill bit for the size of the balance pins,=
 insert it into the plug cutter, centering properly.>>
 
The following technique might be used to *establish* the correct=
 alignment for the "snug fitting paper punching":
 
(1) Put a snugly fitting paper punching over the balance rail=
 pin.
(2) Put a tiny dab of glue on the punching.
(3) Carefully lower the key onto the punching, making sure to=
 position it correctly with respect to its neighbors.
(4) Leave key until glue is dry.
(5) Remove key and mark/measure the position of the punching hole=
 (perhaps by making a mark exactly X-distance "aft" of the=
 correct position).
(6) Cut the notch, glue in new material, etc., etc. -- placing=
 the balance rail pin hole at the previously measured location.
 
Or here's another idea:
 
(1) Cut a notch in the key.  
(2) Cut an insert to go in the notch, leaving just a tiny bit of=
 room for fore/aft "wiggle," and leaving just a tiny bit of=
 excess width (not so much as to touch neighboring key).
(3) Drill a balance rail pin hole in the insert in the "best=
 guess" location.
(4) Dry-assemble the insert and notched key on the keyframe and=
 check for alignment.  Needs tweaking? Remove material from=
 appropriate end of insert to achieve correct alignment.  The=
 point is that it should be *possible* to align the keystick over=
 the insert, when sliding it around.
(5) Remove keystick.  Leave insert on balance rail pin.
(6) Put Titebond on both surfaces.  Lower keystick onto insert. =
 Align correctly with neighbors.  Let dry.  Perhaps epoxy would=
 be a better, albeit messier, glue for this step, since clamping=
 the joint (e.g. with weight) while maintaining alignment might=
 be problematic.
(7) Remove keystick/insert.  Shape the insert flush with the key.=
  
(8) Fill any fore/aft gaps with epoxy (using tape on the sides to=
 retain it).
 
Would that work?
 
Peace,
Sarah
 
 
 
 
 
----- Original Message ----- 
From: "David Love" <davidlovepianos@earthlink.net>
To: "Pianotech" <pianotech@ptg.org>
Sent: Saturday, June 12, 2004 8:51 PM
Subject: Re: Pulley Keys


> I don't quite understand it either.  It seems that you must be=
 paying for
> the information.  The tricky part, as I see it, is when there=
 is
> substantial fore and aft play and the hole center must be=
 reestablished.  I
> can't quite envision an easy method to accomplish that.  
> 
> David Love
> davidlovepianos@earthlink.net
> 
> 
> > [Original Message]
> > From: Farrell <mfarrel2@tampabay.rr.com>
> > To: Pianotech <pianotech@ptg.org>
> > Date: 6/12/2004 4:09:23 PM
> > Subject: Re: Pulley Keys
> >
> > Looks interesting, but looks more like $40 worth of tooling=
 and I guess
> the
> > promise of some information on how to do it? Am I missing=
 something? $550?
> >
> > Terry Farrell
> >
> > ----- Original Message ----- 
> > From: "David Love" <davidlovepianos@earthlink.net>
> > To: "Pianotech" <pianotech@ptg.org>
> > Sent: Saturday, June 12, 2004 1:10 PM
> > Subject: Re: Pulley Keys
> >
> >
> > > Check out the website
> > >
> > > www.onestipiano.com/pages/bhrs.html
> > >
> > > David Love
> > > davidlovepianos@earthlink.net
> > >
> > >
> > > ----- Original Message ----- 
> > > From:
> > > To: pianotech@ptg.org
> > > Sent: 6/12/2004 9:23:17 AM
> > > Subject: Re: Pulley Keys
> > >
> > >
> > > In a message dated 6/12/2004 6:19:12 AM Pacific Standard=
 Time,
> > > A440WRMPiano@tm.net writes:
> > > If you are serious about doing a quality, long-term job on=
 this, and
> > > anticipate doing more in the future, I would recommend the=
 Onesti Key
> > > Balance Rail Hole repair system.  It is top notch.
> > >
> > > William R. Monroe
> > > Madison, WI
> > > Assoc.
> > >          Hi WIlliam
> > >   I've heard of this. How much time to repair a set of=
 holes accurately?
> > >           Dale
> > >
> > >
> > > _______________________________________________
> > > pianotech list info:=
 https://www.moypiano.com/resources/#archives
> > >
> >
> >
> > _______________________________________________
> > pianotech list info:=
 https://www.moypiano.com/resources/#archives
> 
> 
> 
> _______________________________________________
> pianotech list info:=
 https://www.moypiano.com/resources/#archives
> 


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