Butterflies! (spreading hammers)

[Michael Gamble]

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Thanks Carman for that excellent tip! I have had several butterflies in the
past as the number still with masking tape around them following an
injection of glue will testify. I have even glued and held them together
with vise-grips while drilling and inserting new staples. Your tip on the
hot glue sounds most remedially efficacious! I will sort out my old hot melt
gun right away!

Regards from a sunny Sussex Village this 1st. Oct.

Michael G.(UK)

 

 

 

  _____  

From: Carman Gentile [mailto:cgpiano@humboldt1.com] 
Sent: 30 September 2005 21:09
To: pianotech@ptg.org
Subject: Butterflies! (spreading hammers)

 

My colleagues,

  I hereby present another episode in the continuing saga of how to repair
butterfly hammers.
    Below is a constructive exchange from our colleagues in 2002.  I also
have successfully used CA glue in the past to repair a few separated hammer
felts found in cheap spinets.  Today I encountered a 1949 Poole spinet with
-26- separated hammer head felts. In this job I removed the action to my
shop. This time I experimented with HOT MELT GLUE and it works the best of
any of my remedies so far.  The hot glue is thick enough to not get absorbed
into the felt and sets up faster than CA glue with no clamping.

Carman Gentile RPT
Redwood Chapter

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----- Original Message ----- 
From: "C Stewart" <calexste@yahoo.com>
To: <pianotech@ptg.org>
Sent: Thursday, February 14, 2002 3:49 PM
Subject: Butterflies! (spreading hammers)

List,
I'm working on a late 1980's era Baldwin spinet.  It seems to have been
subjected to some excessive humidity at some point in its life, but is in
pretty good shape.  Some of the hammers in the bass section have butterflied
(there are no staples in these hammers).  My question is, short of removing
the action, is there any efficient way to glue and clamp these back
together?  (this piano belongs to my sister in-law, and I have limited time
to work on it).  Preferred glues?
Thanks for any help.
----------------------------------------------------------------------------
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-Court Stewart   

I have applied thick CA, sprayed with kicker, and squish together with
fingers and hold for five or ten seconds - done. I must admit though, this
has always been on an older piano. On the ones I have done like this the
resultant tone seems quite consistent with the unaffected hammers. Although
what I have done seems to work fine, I do consider it a "quick and dirty"
method of addressing the problem.

Terry Farrell
  


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