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#1162545 - 03/13/09 10:58 PM graphite  
Joined: Jun 2005
Posts: 227
Steven Bolstridge Offline
Full Member
Steven Bolstridge  Offline
Full Member

Joined: Jun 2005
Posts: 227
Fitzgerald ,GA
I had a spinet today that had all the hammer butt buckskins smooth with graphite so the back checks were unable to check. I've run across 8 or 10 this past year. Don't know who is doing it. Anybody care to explain the rationale behind this practice, if there is one?


piano tuner/technician
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#1162575 - 03/14/09 12:24 AM Re: graphite [Re: Steven Bolstridge]  
Joined: Apr 2007
Posts: 3,166
rysowers Offline
3000 Post Club Member
rysowers  Offline
3000 Post Club Member

Joined: Apr 2007
Posts: 3,166
Olympia, WA
Sounds like an older Baldwin. They used various synthetic buckskins and one looks like what you describe. I think the material just went bad with age.


Ryan Sowers,
Pianova Piano Service
Olympia, WA
www.pianova.net
#1162864 - 03/14/09 07:15 PM Re: graphite [Re: rysowers]  
Joined: Jun 2005
Posts: 227
Steven Bolstridge Offline
Full Member
Steven Bolstridge  Offline
Full Member

Joined: Jun 2005
Posts: 227
Fitzgerald ,GA
These are full thickness buckskins. I'm familiar with the synthetic stuff. There's black graphite powder all over the stem and on the backcheck felt. I just don't get it. From what I've been able to gather, it's the same tooner doing it.


piano tuner/technician
#1162918 - 03/14/09 09:16 PM Re: graphite [Re: Steven Bolstridge]  
Joined: Feb 2005
Posts: 1,135
Sam Casey Offline
1000 Post Club Member
Sam Casey  Offline
1000 Post Club Member

Joined: Feb 2005
Posts: 1,135
SW Missouri
That's a factory defect, a material called Corfam. Baldwin made a bunch and for a time paid for repair. Not so today. It gets all over the inside and the hammers won't check. Also the butt "leathers" come loose. Personally I replace the butts, if a customer is willing to put that much money is a spinet piano, which is not often.

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#1162929 - 03/14/09 10:07 PM Re: graphite [Re: Sam Casey]  
Joined: Jun 2005
Posts: 227
Steven Bolstridge Offline
Full Member
Steven Bolstridge  Offline
Full Member

Joined: Jun 2005
Posts: 227
Fitzgerald ,GA
Thanks Sam and Ryan. I surely learned something today. I love this forum. Googled Corfam and found this:

http://www.ptg.org/newsletters/841/2006/07%5B1%5D.pdf

Last edited by Steven Bolstridge; 03/14/09 10:19 PM.

piano tuner/technician
#1163498 - 03/16/09 08:08 AM Re: graphite [Re: Steven Bolstridge]  
Joined: Oct 2006
Posts: 2,539
David Jenson Offline
2000 Post Club Member
David Jenson  Offline
2000 Post Club Member

Joined: Oct 2006
Posts: 2,539
Maine
I've seen it too, and also thought it was some tooner doing it until I took a careful look and realized it wasn't graphite. A local school system paid for new parts, but that's the only dealing I ever had with the stuff. 'Nasty business!


David L. Jenson
Tuning - Repairs - Refurbishing
Jenson's Piano Service
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#1164159 - 03/17/09 03:17 PM Re: graphite [Re: David Jenson]  
Joined: Nov 2007
Posts: 6,828
Jerry Groot RPT Offline
6000 Post Club Member
Jerry Groot RPT  Offline
6000 Post Club Member

Joined: Nov 2007
Posts: 6,828
Grand Rapids Michigan
Ran into another one of these black corfam Baldwin's today. Hammers bobbling all over the place. A "get me by remedy" is to roughen up (I used my knife blade) the corfam. It will at least get it to catch for the time being but, replacement is the only solution. What a dumb idea that stuff was.



Jerry Groot RPT
Piano Technicians Guild
Grand Rapids, Michigan
www.grootpiano.com

We love to play BF2.

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