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

[Greg Casper]

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