Piano World Home Page Forums Our Most Popular Forums Piano Tuner-Technicians Forum Would you use CA glue on this piano?

Steinways are particularly well suited to CA treatments, having no bushings.

Bob - Yes, mine seemed to be good quality for a mini and the customer had cleaned up the case so it actually looked very nice. The only bad thing was that the keys had a lot of hairline cracks. They were the ones that are rounded instead having a lip. I had planned to go through it 4 times but after applying the CA glue as I went it was solid after the third pass. And no broken strings! (It was 100 cents or more flat)
The customer was amazed when I was done and actually I was too! Very satisfying...

Ron Koval, let me disagree with you.
I always use the method of installation carboard shims .It is effective job 100%, providing hardness between the pin and pinblock. We do not to cause significant damage to the bush and pinblock when we to screwed out the piano .When a pin must be set the bush did not beat it's. A pin need to twist in pinblock
http://www.youtube.com/watch?v=CGk3dS6dKow&feature=channel

Greetings,
Tapping in a pin had always been my first choice when the block is sound. Fast, easy, good benefits for the cost.
HOwever, CA has given me better results than anything else I have tried in the last 35 years, (includes, Garfields, auto-antifreeze, and some esoteric elixir than an older tech left me with. None of them preserved the feel of the pin that I need to do a decent tuning, and none of them were permanent.
I don't like the shims on at least two levels. The time required to install, and the upsetting of the wire. I have also not seen them to be durable, in comparison with oversize pins, or CA. I have several totally shot blocks out there that were CA'ed years ago, and they tune like any other piano. Haven't yet found any down-side to it, particularly when a mediocre grand still plays, but the pins won't hold and it is either throw it out, or spend way more than the piano is ever going to be worth. $75 on a treatment that give another 10 years? No-brainer.

I don't understand those that use two bottles on one piano. A small bottle of this stuff has done two complete pianos, the way I use it. There is no need to let it get between plate and block, either. If that is what happens, way too much is being used, and it is being put in the wrong place.
Regards,

I wonder if people try to apply it like they would apply Garfield's, by trying to get as much in there as possible.

The fact is that it is necessary to have perfect pitch to pour CA in a grand piano, so this treatment is limited

Sorry, I'm not understanding what you're saying.

Not sure I understand it myself !

In itself, fixing the string is not perfect, but it must be such as to provide rigidity between the pin and the pinblock. Set shim (3 mm) of the corrugated. Cut a 50 by 20 mm strip out of the compact corrugated cardboard (of 2-3 mm thickness). Insert it in the bush and hole of pinblock so that the cardboard filled half of the circle. Firmly place this cardboard strip so that it reached the end of hole of pinblock . Force the turning pin into the hole while gradually screwing it in. Have this done gradually in 3 or 4 steps, so as to keep the turning pin from heating. Keep screwing the turning pin into its original (“home”) fixing zone in the pinblock. Then, very gently with a small effort put the end of the string into the hole of the turning pin using a screwdriver. Adjusting and fixing the turning pin until it reaches the desired position, hold the coils of the string by a screwdriver so as to avoid their “sprawling”. I advise you, unless you have paired turning pin installed, while tightening both turning pins of the same string to obtain equal pitch level. It's screwed a success for several years without any glue
http://www.youtube.com/watch?v=pOBw...16250&index=9&feature=plpp_video

Yes, I have seen the videos and I have dealt with loose pins for many years. I don't do things that way, at all. If I am going to remove a pin, I am going to put another one in that is larger. I want the tuning surface to be steel on hardwood, not paper.

Pinblocks are made of very hard wood, cross plied. To put cardboard in as a shim is to introduce a very soft cellulose material. On one of the videos, it seems that the pin is far harder to turn in that it is later, when it is turned back and forth as the string is tuned. It would be very interesting to have a torque figure for the shimmed pin after the string is tuned to pitch. In fact, it would be a necessity to judge the quality of the repair.

Harpsichords, with their much lighter tension, single piece blocks, and small pins, are traditionally shimmed with parchment, but a piano pin with soft cardboard, no way.
Regards,

Hi,Ed Foote. If I understand you, then paper shim under the pin is really sometimes is used for such repairs in harpsichords. However, you explained that it is made of parchment. But I realized that it's not classical skins parchment . And presumably treated cellulose. "Vegetable parchment, or parchment paper consists of a specially processed wood pulp. It is made in factory conditions of the rag paper, in which there is no inorganic substances, using the reagents and partially dissolving pulp. Technology paper-handling is constructed so that the solution cellulose and then deposited in the pores of the paper and seals them.


Thus, the more you convince me to use corrugated cardboard for "treatment." Because corrugated cardboard is also product second- recyclable cellulose. Thanks for this useful information for me. More thank you for taking the time to look, "my movies about repair pin."

The fact that you do not think it is right to use corrugated cardboard for "treatment" of vertical pianos it is your point of view. I declare the opposite, it's the only painless and effective way tight get contact between hardwood pinblock and the pin. I do for many years make it's act and no complaints from customers.
Regards maxim_tuner

Dmitry from Ryazan (Russia) sent this video for me. I consulted with me about his old upright piano "Leningrad." Dmitry made the first in his life tuning piano. However, here it's inaccurate. But that's not the point, he writes that took advantage of my metod tight pins with corrugated paper shims.
He wrote:"Thank you for your channel, find much that is instructive. Especially liked the idea with a cardboard insert. Recently I tested, works wonderfully".
"Большое спасибо за ваш канал, нашел много поучительного. Особенно понравилась идея с картонной прокладкой. Недавно опробовал, работает изумительно".
http://www.youtube.com/watch?v=JGeZycBWDjY&list=LLlLmCnHFUipd4JolDg038DA&feature=mh_lolz

Yes and you tune pianos so much more accurately than DImitry... you are tiring !

The best repair for tuning pins is toilet paper plus CA , lets be it..

There is a sentence that say "when every one is blind, the one eyed man is the king"

I AM THE ONE EYED MAN ANd YOU ARE MY SUBJECTS !!

Bye guys ! its been a pleasure and , as often I met interesting discrete people.

Dmitri is not a tuner. He has to to do so, because old piano very quickly deep frustrated after a visit to Ryazan tuner. It's don't tune. I am pleased with his work. In the search for truth, he often turns to me for advice. I support his first experimentation with the "Leningrad"

Dimitri not a tuner, Dimitri unisons far better than yours.

Go figure... that is the risk you take when you say "However, here it's inaccurate" it is far more accurate than yours."
or :"deep frustrated after a visit to Ryazan tuner"
Of course you saved that piano from the infamous Ryazan tuner..

That is not how I consider we may talk about any colleague, even if we can think we are the best in the world it is not nice to read that, and a little ridiculous when facing the facts.

Wood is usually used (veener) I understand well there is no more wood in Russia

I really dont care in the end.

Wood in Russia is still have be. Used cardboard shim in a hole of pinblock the Dmitry confirms its effectiveness. It can be seen in the video, there is no problem in his piano sounds. Because he put the shims to screw the pin in a pinblock . Glory corrugated shim!
http://www.youtube.com/watch?v=JGeZ...038DA&index=1&feature=plpp_video

The fun thing is that your student understood how to tune unisons and not you after so long. I would ask me a few questions if I where you.

Maybe it's funny, but it is not about student. Read carefully, corrugated shims!