[pianotech] Pin-Tite

nature.dude nature.dude at yahoo.com
Mon Oct 5 19:52:36 MDT 2009


I was reading the following article below regarding Pin-Tite.  I find it interesting.  It seems like many techs are confusing pianos treated with Pin-Tite with pianos treated with antifreeze?  Maybe?  Below is the article.  What do you all think?  

(article:  http://www.player-care.com/pintite.html)

Facts About Pin-Tite�
 by Craig Brougher




I also want to answer in regard to what I feel is not a fair assessment in 
regard to Pin-Tite and the Guild. It was said by Doug Rhodes that the fact 
that nothing had ever been written about Pin-Tite in the last 15 years of 
the Journal stands as mute testimony to the "fact" that the PTG does not 
endorse pin tighteners. 

While it is true that no official articles have been written on pin tighteners 
(which would require a comparison test between potential advertisers in the 
Journal), neither have there been evaluations of technician schools (which the 
PTG doesn't endorse or rate, either.)  After all, Charles Flaum included their lack of endorsement as proof, too. The Piano Manufacturer's 
Association has never in its history endorsed any after market product, yet 
Charles and Doug are, by inference, including this as a proof that Pin-Tite is 
damaging to pin planks. Charles said that the entire industry is clearly opposed 
to it since no one in the industry endorses it. Doug seconds that motion. As I 
will show, that is incorrect.

Pin tighteners got a bad rap when, in the 50s and 60s (around here, at least) 
it was said that Mobil Oil Co's antifreeze was as close to pin tightener as 
you could get and at the time sold for about 50 cents a qt. So armed with no 
knowledge and trusting completely on hearsay, dozens of tuners in this city 
filled their bottles with it and ruined thousands of wrest planks. Not that 
other brands wouldn't do just as good a job of ruining them, but the tuners 
saved the $3.85/plank. This wave went around the country for about 10-15 
years.

Finally, tuners known to do this got a bad reputation, and suddenly the entire 
guild ran as far away from pin tighteners the other way as they could get. 
They went from one ridiculous extreme to the other. Never ever trying to find 
out if, in fact there was actually something to do the job safely and 
permanently (as proven by the total lack of research done by the PTG and 
admitted by Doug and Charles as well). 

It was lots easier to just throw the baby out with the bathwater. Lump all pin 
tighteners together and pretend they didn't exist. They are presently in this 
mode yet today, fearful that they will be labeled, otherwise. 

Anybody who says they use it is immediately persona-non-grata. That's why I 
did it! I enjoy being  "their"  persona-non-grata. It gives me a lot of pleasure 
and confidence. I enjoy it. Besides, I, and thousands of other legitimate (but 
very quiet) users of Pin-Tite are not the exception, and there are some very 
fine PTG techs I know who swear by it! Just not very loudly, lest they be 
labeled a "hack," which pleases some, and right here on this MMD page! That 
doesn't bother me. I know what's right and I always stick up for those things. 
People know they can trust what I say.

I think that if a man does not fear what other people will think, he will not 
simply go with the flow, but will be honest and curious about trying to learn 
what and why. If anybody is actually interested, a chemist could explain how a 
resin impregnation system is permanent and cannot possibly hurt any wood 
product. I'm surprized that so far no one has said, "I think it an important 
enough subject to warrant further study, and to prove one way or the other." 
Instead, all I have read is, "I don't know, and I don't care to find out."

The principle behind all of the early pin tighteners is this: Glycerine in 
alcohol is absorbed by the wood. The alcohol evaporates, leaving glycerine 
behind. Glycerine has a great affinity for moisture, and so, draws water out 
of the air to join with it. As moisture is adsorbed, it fills the spaces, 
increasing hydrostatic pressure in the plank. This crushes the wood tightly 
around the pins until most of the space is taken up by the moisture entrained. 
The pins rust eventually, not from the glycerine, but from the moisture in the 
air. The next thing that happens is this: The glycerine migrates away from the 
pins and gradually finds its way deep into the plank, where it no longer can 
be of use. The powerful action of wood to wick liquids is stronger than the 
glycerine's ability to stay where it is. So gradually, the water then leaves 
the wood. When it does, it leaves behind a crushed cellular stucture which has 
destroyed the plank. Sometimes they can be repinned, but it isn't likely. And 
the pin holes seem "mushy" to tune, and never seem to hold a tuning.

If you had repinned several of these planks, only to have your customers 
breathing fire down your neck, you would know why tuners ran as fast as they 
could from pin tighteners.

Now comes Pin-Tite. It was formulated by a real live chemist who knew how to 
do it. He ran years of experiments. I have spoken to his widow about it, and 
the tests which were done to prove it. Her son today is a professional chemist 
who supervises its manufacture and tests it. It doesn't rely on water 
retention/compression at all! It is made from the resins which come from wood 
and a delivery system which allows the wood to "absorb" it, NOT just entrain 
it. That means, it is not simply a coating but an integral part of the pin 
hole area which chemically reacts with cellulose, dries completely, and 
becomes a permanent part of the plank again. There is nothing in Pin-Tite that 
does not come from wood. The resultant tuning is a restored plank, with that 
nice little pin "jump" restored, just like Bruce Clark and others want to 
feel. 

Pin-Tite will not work well on any plank previously treated with a glycol or 
any other system which relies on water retention. You are wasting your money. 
However, despite the PTG's fearful silence on Pin-Tite, you must realize that 
all of these products have been advertised in the PTG Journal, and that all of 
these products are still sold by the carload! And guess who buys them? PTG 
members! That, friends, is the ultimate endorsement. It's just that they don't 
talk about it anymore, lest the stigma is also applied to them. One day, this 
will be corrected, but until physical principles are respected and trusted, 
the same taint will be applied to all who use it. Ridiculous!

E-Mail to: Craig Brougher
Phone No: 816-254-1693



NOTICE: 
The third parties mentioned in this article have been contacted and
asked to present any scientific and/or practical information which
refutes Mr. Brougher's comments. Thusfar, none have responded. For the
position of the Piano Technicians Guild regarding all commercially available products, including Tuning Pin Tighteners, 

click here. For other opposing and agreeing articles written about the use of Tuning Pin Tighteners and Loose Tuning Pins, 
click here. The hyperlinks within this paragraph are just a small part of the Archives located at the Mechanical Music Digest website.





      
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