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#641025 - 09/07/01 08:18 PM Sudden stiff centres
Vecke Junior Member Registered: 09/07/01 Posts: 16 Loc: UK	The section on Steinway 'verdegris' prompts me to mention the mysterious stiffening of centres occasionally on Yamaha pianos. I have experienced hammer-flange centres suddenly stiffening so much that the hammer shank stays raised. On removal of the pin for re-centering, a black carbon-like material appears to have been released. Any explanations?
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#641026 - 09/07/01 09:08 PM Re: Sudden stiff centres
Bob 3000 Post Club Member Registered: 06/01/01 Posts: 3659 Loc: Orlando FL	Is it possible the actions were lubricated with graphite at some time? Graphite can gum up over time, and would look like black carbon. _________________________ www.PianoTunerOrlando.com Piano Technician serving Orlando and Central Florida 1927 Steinway M, rebuilt/refinished 2005 - Selling 15k
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#641027 - 09/07/01 11:11 PM Re: Sudden stiff centres
SamLewisPiano.com 500 Post Club Member Registered: 08/19/01 Posts: 635 Loc: WHITE BLUFF (Nashville area) T...	Just my 2 cents worth: I agree with Bob. I see a lot of Yamahas, so if this was a Yamaha phenomenon, it would be showing up. Definitely could be graphite.......Sam _________________________ Since 1975; Full-time piano tuner/tech in Nashville; Lacquer and polyester specialist. www.SamLewisPiano.com
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