Pianotech

  • 1.  Sticky new tuning pins?

    Registered Piano Technician
    Posted 04-08-2023 01:51

    I had to replace a few loose tuning pins on a Young Change grand.  The old  #2/0 was loose, but a 4/0 was too tight and even a 3/0 popped and stuck.

    What do you use in a tuning pin hole to avoid sticking or popping/tight tuning pins?

    Years ago I strung a piano with a pin block treatment liquid that I believe was re-packaged marine spar varnish but it seemed to work well. 

    Talc seems counter productive.  CA glue is un-necessary here.  Shellac?  WD-40? 30 wt. motor oil?



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    Blaine Hebert RPT
    Duarte CA
    (626) 795-5170
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  • 2.  RE: Sticky new tuning pins?

    Registered Piano Technician
    Posted 04-08-2023 08:14

    Was the existing pin actually 2/0?  I would have expected to find something smaller. 



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    Floyd Gadd RPT
    Regina SK
    (306) 502-9103
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  • 3.  RE: Sticky new tuning pins?

    Registered Piano Technician
    Posted 04-08-2023 09:15

    Blaine, 

    Curious as to why you say CA glue would be unnecessary here? Applying some thin CA glue to the base of the existing tuning pin is the first thought that comes to my mind.

    Best, 

    Alan 



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    Alan Eder, RPT
    Herb Alpert School of Music
    California Institute of the Arts
    Valencia, CA
    661.904.6483
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  • 4.  RE: Sticky new tuning pins?

    Registered Piano Technician
    Posted 04-09-2023 00:54

    I find that CA glue goes bad in my trunk and I tend not to carry it unless for a specific issue.  I do like CA glue for treating loose pins, but I usually prefer to change the pin out.



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    Blaine Hebert RPT
    Duarte CA
    (626) 795-5170
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  • 5.  RE: Sticky new tuning pins?

    Posted 04-09-2023 09:28

    hello Blaine,
    i found that most of my glues would go bad rather quickly so i got a little fridge for the car, it plugs into the cigarette lighter socket. It solved the problem.
    I've always been hesitant to put in a thicker tuning pin since, in my thinking, it would add even more stress to an already weak pin block. Is a thicker tuning pin a more or less permanent solution or is it good for only a x number of years?
    Peter



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    Peter Janssen
    Fort Myers FL
    (678) 416-8055
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  • 6.  RE: Sticky new tuning pins?

    Registered Piano Technician
    Posted 04-09-2023 14:00

    I have "enthusiastically" used larger pins in loose blocks.  I personally believe (until proven otherwise) that a larger pin will expand the block and add pressure to surrounding pins.  Some blocks are so badly deteriorated that anything you do is a blessing.  CA glue does work; no argument.

    I also don't pound in new pins (except on re-stringings) as that can split block laminations.  Think of it as wrist exercise!



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    Blaine Hebert RPT
    Duarte CA
    (626) 795-5170
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  • 7.  RE: Sticky new tuning pins?

    Registered Piano Technician
    Posted 04-09-2023 00:52

    This piano was strange.  It is a YC with grey brackets and the let off was about perfect, but with well worn hammers, meaning the brackets were growing to acomodate the hammer wear.

    Some of the bass pins were 2/0 and some were 3/0 and possibly 4/0, suggesting that it was a problem in the factory as the pins all matched (corroded chrome).



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    Blaine Hebert RPT
    Duarte CA
    (626) 795-5170
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