Mystery tool? - not...

[Isaac Sadigursky]

Hi,Dave! Here is the reason for this tool:old,absolete shanks for
Brambach's,Kranich [Cronic] & Bachs,older Everetts,when traveling technician
with no-parts back-up can do this splicing job in the field and it doesn't
matter if this is a brocken shank for a vertical or a grand.

Of course,replacing new parts is easier and faster and it's not a shop tool.

Regarding your post about tools:I went through severall "Pregant" tool cases
and learned to divide them into BS[Basic stuff] kit,BS-2[Big stuff
kit],BS-3[Bulky stuff kit],etc.String stuff-separate box,Hammer shanks
replacement for both verticals and grands-separate box,etc.You had a chance
to see my van and we had a discussion on that.It's definitely,not a
minimalistic approach.

Hope it helps. Isaac

  _____  

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of David Ilvedson
Sent: Sunday, March 05, 2006 10:54 AM
To: pianotech at ptg.org
Subject: RE: Mystery tool? - not...

 

Which asks the question:  If you've got to drill out either the butt or the
hammer head...why not just do them both and put in a new shank...

David Ilvedson, RPT
Pacifica, California




  _____  

Original message
From: "Israel Stein" 
To: pianotech at ptg.org
Received: 3/5/2006 10:33:47 AM
Subject: Mystery tool? - not...

At 09:41 AM 3/5/2006, pianotech-request at ptg.org wrote:

Puzzler?
 
Hello list,
 
I found this tool in a box of tools given to me.  I'd like to know what it
is.  A hammer shank fits all the way through each of the holes
longitudinally, and the screws are perpendicular to those holes, as if the
screws are meant to hold the hammer shanks in place.  (to what purpose?)
And why is there a diagonal slot sawn into the side, intersecting each of
the "shaft tunnels"?
 
Is this a useful tool?
 
Thanks,
John Dorr



John,

That's a hammershank repair jig. Sort of a mini miter box to make a
"prosthetic" for a broken hammer shank from a new hammershank. You put your
broken shank through the hole, tighten it down with the screw and saw it off
through the diagonal slot  with a thin saw of some sort. You then do the
same thing with a new shank - and you have a piece of shank with the same
angle on one end as the one you created on the broken shank. Fit them
together, glue, wind lots of thread around the joint while the glue dries,
trim to size and rehang the hammer. Useful field repair when you have enough
of the broken shank left to work with and shank replacement - for some
reason - is not an option. The two different size holes are for different
diameter shanks. The tighter the shank fits in the hole - the more precise
angle of a cut you will end up with...

You might want to make sure that the joint and the woodgrain of the
"prosthetic" are both at a right angle to the direction of the hammer blow -
to minimize stress on the joint and the shank...

Israel Stein 

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