Jim, This tech that has been gone 15 years....you said he used "mineral spirits". What exactly was the stuff? Do you mean cleaning fluid like naptha. Please clarify. Howard S. Rosen, RPT hsrosen@emi.net ---------- > From: JIMRPT@aol.com > To: pianotech@ptg.org > Subject: Re: Re: Damp Action Drying > Date: Sunday, September 21, 1997 7:03 PM > > Susan, Warren, et al; > S&S did indeed dip "some" of their flanges in a hot parrafin/tallow after > they were bushed, I would assume from my examining many verdegris bushings. > However they were not the only makers to do so in an attempt to solve the > problem of moisture related sluggishness/sticking. Most often the flanges to > be treated such were the hammer flange and the rep lever flange. Quite often > you will find an instrument with almost solidly stuck up flanges in one place > but absolutely free flanges in another. > Any organic/petroleum based product will cause verdegris to form including > parrafin, tallow, mineral spirits, gasoline, mineral oil etc., etc.. In my > opinion it is not a question of 'if' it will form but rather 'when' it will > form. > There used to be a very excellent technician in town who swore by mineral > spirits as being "the thing" to use on pianos for lubrication. This tech > would "lubricate thoroughly" any action that made it to his shop. Well he > has been dead about 15 years now and we are seeing more and more of his > lubricated actions showing up with little green waxy growths coming out from > the centerpins in most of the flanges on the action............... > This is a test to see if you were paying attention... :-) Where do you think > this green stuff is coming from, what is it , and why does it show up on his > customers pianos to a much greater extent than on others of similar make age > and condition? > Circumstantial??, perhaps so but it also is not coincidence Huh? > Jim Bryant (FL)
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