Dunno, But let me add to the question. Do we first lubricate then shrink if necessary, or shrink, then lubricate? I've done it both ways, but wonder what others think. I generally go for lubing first, that almost always frees everything up. Which would be the "proper" order on this one? William R. Monroe Madison, WI Assoc. ----- Original Message ----- From: "Dave Nereson" <davner@kaosol.net> To: <pianotech@ptg.org> Sent: Friday, November 05, 2004 9:17 PM Subject: sluggish centers > Went to tune a lady's Baldwin spinet (not Acrosonic, but doesn't > matter) and after hitting the soft pedal, most of the hammers drifted back > very slowly. It had changed climates and the action centers were sluggish. > I've encountered this many times before. > But what I don't get is: why is it almost always remedied by shrinking > only the hammer-butt center-pin bushings? Don't all the other center pin > bushings swell as well (or flanges shrink, whatever the case may be)? > I applied about 1:4 alcohol to water to all the hammer flange bushings, > let it dry, and that freed them up pretty well, as it usually does. Still > had to re-pin a few. But why aren't all the jacks, wippens, and dampers > sluggish also? > --David Nereson, RPT > > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives >
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