> > The major American piano manufacturer that I work for has two methods for > treating tight action centers. > > 1) a 1:8 silicone/naptha solution: 1/2 pint silicone to 1/2 gal. naptha > apply liberally to all action centers > > 2) methanol/water shrinking solution: 75% water 25% methanol, to be > applied to those centers that didn't respond to the first treatment. > Drying time is 4-6 hrs., using a hair-dryer speeds it up. > > 0> (Any chance that alcohol is a single malt?) (-8 > Rob, First it was a pint of beer or two, :-) So that's what you are all doing, with alcohol very interesting as any one done a long term study on the effects of alcohol on the bushings? I personally store my center pins in a 50/50 dry powder graphite and baby powder mixture, (the stuff you put on babies bums) this allows me to have a tighter fit in the wood and the bushing and still alow the center to move freely I uses to just use 100% graphite but this was messy and difficult to get of your hands. thanks for the info -- Barrie Heaton MABPT MIMIT England.
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