----- Original Message ----- From: "Dave Nereson" <dnereson@dimensional.com> To: <pianotech@ptg.org> Sent: February 13, 2002 5:15 PM Subject: graphite > On this graphite thing -- everybody talks about it like it's anthrax or > something, but I don't find the stuff all that offensive. Not powdered > graphite, anyhow. Depends on where it's used. As you say, other than being messy it doesn't cause much harm and can often do some good. When applied to action center cloth and used in action centers, however, it is the source of many problems. I've seen new shanks (using graphite in their centers) freeze up so badly physical force with a screwdriver through the strings was required to return the hammers to rest. Treating action centers with graphite is not done often by technicians but it is by the factories making the actions. As may be, it doesn't matter how the graphite ends up in the action center, once there it's all to likely to cause problems down the road. That applies to damper guide rail bushings as well. Del
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