[pianotech] Second dose of CA?

[Euphonious Thumpe]

But if you are going to flip the piano over and CA from within, please do any tapping in of tuning pins first, as the CA may form a cap over the pins' bottoms which will cause the block to shatter if tapped later.


Euphonious Thumpe
 

________________________________
 From: erwinspiano <erwinspiano at aol.com>
To: pianotech at ptg.org 
Sent: Friday, August 24, 2012 11:04 AM
Subject: Re: [pianotech] Second dose of CA?
  

See more ca glue protcol. I said this thread would come up again if I mentioned it.
Maybe someday I,ll compile all the archival footage on Ca glue techniques, tools and storys. It may be a best seller. I could do a world book tour, groupies and glu a holics stalking my every move! Yeah.....
Nahhh. Come on now......I AM smiling.
Have great no ca glue day
Dale




Sent from my Samsung Galaxy Tab 10.1 
Dean May <deanmay at pianorebuilders.com> wrote:
Yes, you can often get very good results with a second application. Years
ago when CA was starting to be used on pins there were two extremes of
application: one used 4 to 8 oz of glue, so much that glue ran everywhere.
The other put barely any glue on at all. I find 1 to 2 oz is plenty for most
pianos. Do a good soaking on the bushings as I believe that is where most of
the holding power comes from. 

You likely have a piano that had barely any CA put on it, so a second
application may be just the ticket. It is cheap and easy to try, so why not?
You certainly won't make anything worse. 

If, after treating a few pins, it doesn't look like the CA is penetrating
much, you might try drilling a tiny hole at the 6 o'clock position of the
pin. Someone posted a protocol on this a few months ago for a second
application scenario and said it worked well. You might check the archives,
but as I recall you angle the drill so that it penetrates to the pinblock as
it comes up to the pin. You are just creating another channel for the CA to
travel further into the hole. Sounds like it should work great. 

The flipping the piano upside down and applying from the bottom will also
work. Be sure to remove lid and hinges from rim before rolling it over. 

If it is only a few pins giving you grief, then remove the pin, squirt 6-8
drops of CA around the hole, re-insert pin. I have never had that not work.

Dean
Dean W May                (812) 235-5272 voice and text 
PianoRebuilders.com    (888) DEAN-MAY        
Terre Haute IN 47802

-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Paul Mulik
Sent: Friday, August 24, 2012 8:34 AM
To: pianotech at ptg.org
Subject: [pianotech] Second dose of CA?

A school that I tune for has a mid-1970s Kawai grand that's on its last
legs. The tuning pins are too loose to hold a tuning, but somebody at some
point in the past has already used CA glue on them. Is there any point in
another CA application, or is it a hopeless case at this point?  I've
already told them there's not a lot I can do for it at this point, but like
schools everywhere there's not enough money to spend on extensive repairs or
a new piano. 

Paul Mulik
Joplin, MO
Sent from my U.S. Cellular BlackBerryR smartphone

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