Humidity Quick Zap

[gordon stelter]

Perhaps the compresion set is actualy in the flange
wood behind the bushing, rather than the felt. Or a
bit of both.
    Thump

--- Don <pianotuna@accesscomm.ca> wrote:
> Hi Bill,
> 
> So why do *forced* drying methods lead to even
> looser centers than the
> overnight natural drying then? Something is wrong
> with the theory of
> "compression set" I fear.
> 
> As "rapid" fixes sometimes a heat gun or hair drier
> by itself will
> work--particularly if some misguided tech has used
> wd-40. It seems to "burn
> off" the contamination--at least for a while.
> 
> At 07:43 PM 12/13/02 -0500, you wrote:
> >Sarah,
> >
> >Your experience seems to be completely the opposite
> of those of us 
> >who have used the alc/H2O treatment quite
> successfully. The alcohol 
> >is a surfactant, allowing the wool cloth to soak of
> the water. Water 
> >laden, the bushings now squeeze against the center
> pins, and during 
> >the 24 hours (roughly rumored thereabouts) is takes
> the water to 
> >evaporate, the wool fibers take a compression set
> around the pins. 
> >Once the bushings have dried out this compression
> set will have 
> >produced a looser fit.
> >
> >Granted it won't work on bushings contaminated by
> paraffin oil or 
> >WD-40, or rusted pins. But those situations are the
> extreme (except 
> >of course for an entire era of Steinway), and are
> easily spotted.
> >
> >Time is an unavoidable ingredient in this process.
> Simply soaking the 
> >bushing and immediately thereafter chase it out
> with a hairdryer 
> >won't allow the compression set to occur. Tommy
> should confirm that 
> >this action is not suffering from one of the
> exceptions, then pick up 
> >pick it up some morning, apply the alc/H20, and
> bring it back the 
> >next morning.
> >
> >Bill Ballard RPT
> >NH Chapter, P.T.G.
> >
> >".......true more in general than specifically"
> >     ...........Lenny Bruce, spoofing a radio
> discussion of the Hebrew 
> >roots of Calypso music
> >+++++++++++++++++++++
> >_______________________________________________
> >pianotech list info:
> https://www.moypiano.com/resources/#archives
> >
> >
> 
> Regards,
> Don Rose, B.Mus., A.M.U.S., A.MUS., R.M.T., R.P.T.
> Tuner for the Center of
> the Arts
> 
> mailto:pianotuna@accesscomm.ca
> 
> http://us.geocities.com/drpt1948/
> 
> 3004 Grant Rd.
> REGINA, SK
> S4S 5G7
> 306-352-3620 or 1-888-29t-uner
> _______________________________________________
> pianotech list info:
https://www.moypiano.com/resources/#archives


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