[CAUT] pin block restorer

[Nichols]

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Les, Jim, list,
    My dad started me on Garfields 30 years ago. In my dry climate, it 
actually works better than CA glue. A 50-50 mix with methanol or denatured 
alcohol, applied with two or three passes, using a complete 4oz hypo bottle 
per block has been quite successful. The instrument needs to remain 
horizontal for at least 24 hours, and wait two weeks before tuning. Many of 
the pianos I doped over twenty years ago are still pretty snug. In most 
cases, only one or two pins may need to be sized-up. That's 99%.  A thinner 
solution can be used when there's not good penetration, and a super-thin 
solution can even-out the feel of jumpy blocks. I have never had a block 
destroyed by the solution, although we due loose track of customers, or 
they trade-up, or whatever. At the plant we've got about a cord of old 
blocks. I've seen many that had been doped, and if they are de-laminating, 
I'm sure they would have done it without the solution anyway. Penetration 
does seem to stay near the top, but hey..... that's where the pin is loose, no?
    I believe that history and climate are very major factors, and that 
techs from different areas will have varied success. If I were to advise 
the world on the use of CA glue, based totally on how it works at 17% RH, 
I'd say don't bother. But.... I know how to deal with it, so I'd say knock 
yourself out. One way or the other! <G>

Regards,
Guy Nichols, RPT


At 11:34 AM 12/19/2005 -0700, you wrote:

>Les, List,
>
>I don t know if this was mentioned but past Journal articles have shown 
>pictures of pinblocks that were doped with different solutions (not CA 
>glue) and it shows how the solutions generally don t penetrate through the 
>pinblock and have a tendency to destroy the upper one or two laminates. 
>Sometimes within a couple years.
>
>The correct way (according to the article) to use Garfield type products 
>is to remove about every 15th pin and fill the holes several times until 
>it is saturated . Before CA glue I did this and it does work. Of course, 
>it takes time, you risk breaking strings, etc. etc. but IMO the 
>superficial doping of a pinblock is not good at all. In cases where it did 
>work probably you could have spat on it and it would have done about the 
>same. (Just joking. No comments on the dangers of saliva, please.)
>
>CA glue, as stated in several posts, is far better, and doesn t seem to 
>destroy the block over time.
>
>Jim Busby BYU
>
>
>_____________________________________________
>From: caut-bounces@ptg.org 
>[<mailto:caut-bounces@ptg.org>mailto:caut-bounces@ptg.org] On Behalf Of 
>Leslie Bartlett
>Sent: Sunday, December 18, 2005 8:18 PM
>To: caut@ptg.org
>Subject: [CAUT] pin block restorer
>
>I went over 50 miles to this house to discover this untuneable piano had 
>about 5 really loose pins, and the rest were just fine!  I neither took my 
>hearing aids nor my Computer for TuneLab, so ended up pretty much 
>struggling with the tuning, but did no pinblock work whatsoever.  But 
>thanks for opinons. I'll certainly keep them for future use, which WILL 
>come about one of these days.
>
>thanks
>
>les bartlett << File: ATT116372.txt >>

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