Lubricate first in hopes of not having to shrink. Goose Juice, Protek....I use to never believe shrinking after a few terrible over shrinking disasters some 25 years ago. But it really worked on one action that nothing else would. David I. ----- Original message ----------------------------------------> From: "William R. Monroe" <A440WRMPiano@tm.net> To: Pianotech <pianotech@ptg.org> Received: Fri, 5 Nov 2004 21:36:00 -0600 Subject: Re: sluggish centers >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 >> >_______________________________________________ >pianotech list info: https://www.moypiano.com/resources/#archives
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