metal weights

[baoli liu]

Joe,

Thank you for the correction!  

36 lb/cubic inch is too heavy! The hammer made from
such a heavy material is used for weight-lifting,not
piano-tuning.

Baoli


--- Joe And Penny Goss <imatunr@srvinet.com> wrote:
> Hi Baoli,
> Actually iron is .284 per cubic inch titanium is
> .163 per cubic inch or
> rounded off one half as much as iron.
> However since titanium is stronger than tempered
> iron or steel a tool can be
> made even lighter and still have the same strength.
> Removing weight does not always result in a better
> tool. Ever try to throw a
> ping pong ball at a target? It is much easier with a
> little more mass that
> you can feel. But too much mass ( 16 pound shot putt
> ) and the advantage of
> mass is gone.
> Ever try one of those HEAVY factory tuning
> hammers<G> For use while standing
> only?
> Joe Goss
> imatunr@srvinet.com
> www.mothergoosetools.com
> ----- Original Message -----
> From: "baoli liu" <baoli_liu@yahoo.com>
> To: <pianotech@ptg.org>
> Sent: Friday, June 07, 2002 10:23 AM
> Subject: Re: metal weights
> 
> 
> > Hello Leslie,
> >
> > There is an article about titanium tuning hammer
> on
> > Jan. 2001 Jornal,you probably already read it.
> >
> > The weight of steel is about 7.8 kilograms each
> cubic
> > centimeter.
> > that's about  36 pounds each cubic inches IF I did
> the
> > right caculation.
> >
> > Baoli
> >
> >
> > --- Leslie W Bartlett <lesbart1@juno.com> wrote:
> > > Is anyone aware of the relative weights, to each
> > > other, of stainless
> > > steel and titanium?  I have made two tuning
> hammers
> > > by having a 1/2 inch
> > > stainless bar welded on the hexagonal shaft from
> > > suppliers, then grinding
> > > a good bit of the stainless down to eliminate
> > > weight.  They're still a
> > > bit heavy for my liking, but I like very much
> the
> > > way they feel. If I
> > > could get the same rigidity with a lighter metal
> it
> > > would be
> > > hammer-heaven.................    Would also
> need to
> > > know where one could
> > > get such a bar threaded.
> > >
> > > thanks
> > > les bartlett
> > > houston
> > >
> > >
> >
>
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