Hammer boring fit was: Re: TOOLS/Hide Glue, etc

[Greg Torres]

8 )


----- Original Message -----
From: "Greg Casper" <gcasper@pacbell.net>
To: <pianotech@ptg.org>
Sent: Tuesday, May 14, 2002 6:50 PM
Subject: RE: Hammer boring fit was: Re: TOOLS/Hide Glue, etc


> Or ME!
>
> Greg Casper
> San Jose, CA
>
> -----Original Message-----
> From: owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org]On Behalf
> Of Greg Newell
> Sent: Tuesday, May 14, 2002 2:18 PM
> To: pianotech@ptg.org
> Subject: Re: Hammer boring fit was: Re: TOOLS/Hide Glue, etc
>
>
> It's happened. We're both posting on the same or similar threads. Would
you
> mind using your last name or at least initial when you post so folks can
> tell it's you and not me. Thanks!
>
> Greg Newell
>
> At 02:25 AM 5/14/2002, you wrote:
> >In this case the hammers rocked way too much...The difference between the
> >hammer bore and the shank diameter varied as much as .013 to .016...
> >
> >With all due respect I would much rather have the correct bore angle and
> >diameter for a good fit to begin with as that is what I paid for. I don't
> >believe it is too much to ask for, especially of Steinway...
> >
> >Regards,
> >Greg
> >
> >----- Original Message -----
> >From: "David Love" <davidlovepianos@earthlink.net>
> >To: <pianotech@ptg.org>
> >Sent: Tuesday, May 14, 2002 12:43 AM
> >Subject: Hammer boring fit was: Re: TOOLS/Hide Glue, etc
> >
> >
> > > Depends on how wobbly.  Too loose isn't good, but I like some movement
> so
> > > that I can adjust angles slightly to smooth out the fanning and square
> up
> > > hammers when boring isn't perfect.  If you use hot hide glue it has
> > > excellent gap filling properties and will form a nice collar that
takes
> up
> > > the slack well.  With thinner wood glues a better fit is more
important.
> > >
> > > David Love
> > >
> > > ----- Original Message -----
> > > From: "Greg Torres" <Tunapiana440@cox.ne t>
> > > To: <pianotech@ptg.org>
> > > Sent: May 13, 2002 6:39 PM
> > > Subject: Re: TOOLS/Hide Glue, etc/Isaac Oleg's post
> > >
> > >
> > > > THIS was my main gripe on my previous 'rant' about the Steinway
> > > > hammers/parts/...
> > > > I also like a hammer bore that is a fairly snug fit. It should never
> be
> >so
> > > > loose as for hammers to wobble. And for Steinway part's dept. to say
> >that
> > > is
> > > > normal just blows my mind...
> > > >
> > > > Best,
> > > > Greg Torres
> > > >
> > > >
> > > > ----- Original Message -----
> > > > From: "John Delacour" <JD@Pianomaker.co.uk>
> > > > To: <pianotech@ptg.org>
> > > > Sent: Monday, May 13, 2002 7:12 PM
> > > > Subject: RE: TOOLS/Hide Glue, etc/Isaac Oleg's post
> > > >
> > > >
> > > > > What is a standard hole?  The hammers should be bored so that they
> are
> >a
> > > > very tight fit on the shank before knurling.  The shank should then
be
> > > > rolled through the knurling machine to reduce the diameter so that
the
> > > > hammer can be turned without creaking for about 20 seconds after
> gluing.
> > > > After that it should become too tight as the moisture from the glue
> > > > re-expands the compressed shank.  The hammer should never at any
stage
> > > have
> > > > any wobble, let alone 'fall'!  If the hammers are carefully bored,
> >hammer
> > > > fitting is straightforward provided you follow the proper
procedures.
> >To
> > > > have to rely on "wobble" for fore-and-aft positioning is a sign that
> the
> > > > hammer heads have not been bored properly -- and there is at least
one
> > > > well-known German hammer maker whose speed exceeds his exactness.  I
> > > always
> > > > bore my own and save myself a lot of trouble.
> > > > >
> > > > > JD
> > > > >
> > > > >
> > > > >
> > > > >
> > > >
> > > >
> > >
> > >
>
> Greg Newell
> mailto:gnewell@ameritech.net
>
>