Grand hammer shaping.

[David Ilvedson]

Often hammer alignment is the culprit in bass hammers rubbing...this is hammer movement of absolutely straight up and down...no crabbing one way or the other...

David Ilvedson, RPT
Pacifica, California






Original message
From: "Christopher Thomas" 
To: "Pianotech List" 
Received: 5/17/2006 3:29:26 PM
Subject: Re: Grand hammer shaping.


I am not sure. Took off what I suspect were the original 1910 hammers, which had been shaped to nearly a point - pre power tools. Just wondering about shaping one side vs two, and what is standard.

 -----Original Message-----
From:   Joe And Penny Goss [mailto:imatunr at srvinet.com]
Sent:   Wed May 17 10:21:10 2006
To:     Pianotech List
Subject:        Re: Grand hammer shaping.

Grand hammer shaping.Hi,
This is sometimes why one side of the flange is consistantly looser than the other?
Joe Goss RPT
Mother Goose Tools
imatunr at srvinet.com
www.mothergoosetools.com
  ----- Original Message -----
  From: Christopher Thomas
  To: Pianotech List
  Sent: Wednesday, May 17, 2006 8:57 AM
  Subject: Grand hammer shaping.


  In shaping new hammers in the bass section with respect to clearance between the adjoining hammers, it .appears that the hammers require shaping on one side (bass side) to acheive clearance. Is there any concern by the imbalane about the shank axis? Although the hammers are skewwed, is there any need to shape the hammer tail on the opposite side?

   -----Original Message-----
  From:   Jon Page [mailto:jonpage at comcast.net]
  Sent:   Tue May 16 22:34:05 2006
  To:     pianotech at ptg.org
  Subject:        Gulbransen spinet whippen needed

  If there is no way to repair the old wippen...

  Take the wippen off A#7, install the damper spoon from the old wippen.

  The reason for A#7 is that it won't be missed. Even if someone were to
  compulsively push down keys at the top end, they would play the white keys.
  --

  Regards,

  Jon Page
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