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#1162545 - 03/13/09 11:58 PM graphite
Steven Bolstridge Offline
Full Member

Registered: 06/13/05
Posts: 193
Loc: 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?
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#1162575 - 03/14/09 01:24 AM Re: graphite [Re: Steven Bolstridge]
rysowers Offline
2000 Post Club Member

Registered: 04/16/07
Posts: 2340
Loc: 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.
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Ryan Sowers,
Pianova Piano Service
Olympia, WA
www.pianova.net

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#1162864 - 03/14/09 08:15 PM Re: graphite [Re: rysowers]
Steven Bolstridge Offline
Full Member

Registered: 06/13/05
Posts: 193
Loc: 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.
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#1162918 - 03/14/09 10:16 PM Re: graphite [Re: Steven Bolstridge]
Sam Casey Offline
1000 Post Club Member

Registered: 02/05/05
Posts: 1135
Loc: 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 11:07 PM Re: graphite [Re: Sam Casey]
Steven Bolstridge Offline
Full Member

Registered: 06/13/05
Posts: 193
Loc: 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


Edited by Steven Bolstridge (03/14/09 11:19 PM)
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#1163498 - 03/16/09 09:08 AM Re: graphite [Re: Steven Bolstridge]
David Jenson Offline
1000 Post Club Member

Registered: 10/22/06
Posts: 1952
Loc: 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 04:17 PM Re: graphite [Re: David Jenson]
Jerry Groot RPT Offline
6000 Post Club Member

Registered: 11/07/07
Posts: 6828
Loc: 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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