Air hammers for Pin torque

[Farrell]

This has been exactly my experience. BIG hammer, few blows - and if one or
two blows goes a little astray, the pin goes crooked. Smaller hammer, many
blows & I never saw the pin go crooked (like I did with BIG hammer). Pin
torque WAY more consistent with smaller hammer. I ordered the air hammer Del
recommended. I feel certain that will get torques even better - with the air
hammer, I expect that the limiting factor in torque consistency will be my
drilling technique.

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

----- Original Message -----
From: "Diane Hofstetter" <dianepianotuner@hotmail.com>
To: <pianotech@ptg.org>
Sent: Tuesday, October 24, 2000 3:15 AM
Subject: Re: Air hammers for Pin torque


> Hi Barrie,
>
>   I like your history website!  You've sure done a lot of work on it.
>
>   I believe that a primary cause of the better and more consistent torque
is
> from it being hit by many small blows rather than a few heavy ones.  True,
> the pin does go in straighter all the way.  Also the number of blows is
> probably more consistent.  The hammer hits at regular intervals and the
> distance each pin has to go down is the same.  I notice that when I string
> with a sledge, I tend to use differing numbers of hits with the hammer,
> depending on how tired I am!
>
>   (A lot less tired with an air hammer!)
> Diane
>
>
> >From: Barrie Heaton <Piano@forte.airtime.co.uk>
> >Reply-To: pianotech@ptg.org
> >To: pianotech@ptg.org
> >Subject: Re: Air hammers for Pin torque
> >Date: Mon, 23 Oct 2000 19:54:52 +0100
> >
> >In article <002601c03bda$5aaa6680$bd3c070c@delsmachine>, Delwin D
Fandrich
> ><pianobuilders@olynet.com> writes
> >>
> >>----- Original Message -----
> >>From: "Diane Hofstetter" <dianepianotuner@hotmail.com>
> >>To: <pianotech@ptg.org>
> >>Sent: October 21, 2000 12:10 PM
> >>Subject: Re:Air hammers for Pin torque
> >>
> >>
> >>>Around the time I started stringing with an air hammer, I mentioned it
at
> >>a
> >>>PTG meeting.  After the meeting, Laroy Edwards came over and told me
that
> >>at
> >>>the Yamaha factory they had discovered they got better and more
> >>>consistent
> >>>pin torque with an air hammer.
> >>>Diane
> >>>
> >>-----------------
> >>
> >>This has been our experience as well.
> >>
> >>Del
> >>
> >>
> >
> >Could it be because there is no side impact to the pin,  as you get with
> >the arching effect  with  a normal hammer - so the pin or punch is not
hit
> >square each time.
> >
> >Barrie,
> >--
> >Barrie Heaton      PGP key on request           http://www.a440.co.uk/
> >AcryliKey Ivory Repair System UK ©
http://www.acrylikey.co.uk/
> >The U.K. Piano Page ©
> >http://www.uk-piano.org/
> >                                  Home to the UK Piano Industry
>
> _________________________________________________________________________
> Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.
>
> Share information about yourself, create your own public profile at
> http://profiles.msn.com.
>
>