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#2113604 - 07/06/13 07:27 AM wood under keytops
ZBGM0 Offline
Full Member

Registered: 06/07/11
Posts: 97
HI, I have a simple question.

When you press one white key on piano, then you can see the wood under the keytops of nearby two keys (left and right from the pressed key). This wood in normally fresh and bright on new Kawai pianos. I discovered that one piano had dark stains on this wood under keytops. Dark stains had more or less the same pattern. Anyone had such experience? and what are the most frequent causes for this? Is it possible that this could be the sweat leaking between the keys? Even if this is a sweat, can you really expect that this can happen in a short period of time….it makes me suspicious…

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#2113619 - 07/06/13 07:55 AM Re: wood under keytops [Re: ZBGM0]
Olek Online   content
6000 Post Club Member

Registered: 03/14/08
Posts: 6390
Loc: France
sweat, whatever, but one have to play a lot or really be dirty.

Can be cleaned with 70° alcohol on a moistened rag and very little soap.

Statistics have been made, the pianists that put finger up in the nose tend to have dirty keys sooner.

Children that eat jam also...


Edited by Olek (07/06/13 07:56 AM)
_________________________
Isaac OLEG - http://picasaweb.google.fr/PianoOleg pro

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#2113639 - 07/06/13 08:56 AM Re: wood under keytops [Re: ZBGM0]
Loren D Offline
2000 Post Club Member

Registered: 06/22/10
Posts: 2545
Loc: PA
One can only speculate without seeing it, but wood can and does have variations in color; dark spots, etc. Especially the pine typically used in keys. Doesn't necessarily mean it's a defect.
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DiGiorgi Piano Service (1984-2013)
http://www.digiorgipiano.com

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#2113661 - 07/06/13 09:36 AM Re: wood under keytops [Re: Loren D]
ZBGM0 Offline
Full Member

Registered: 06/07/11
Posts: 97
Thank you both. One thing I can assure you is that this is not the wood itself but it is clearly seen that those are stains. It is not easy to describe but when you see it you just know that it is not natural. Stains look dirty. I am 100 % sure that piano didn’t have those stains when brand new. I am just asking if those stains can appear only from playing piano for let’s say 2 years?

Olek said yes, but you need to be really dirty:) problem is that most people appreciate new pianos and it is hard to imagine someone play with dirty hands all the time….

Why I am asking you this….because this makes me feel that piano was used much more than it was said.



Edited by ZBGM0 (07/06/13 09:36 AM)

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#2113664 - 07/06/13 09:50 AM Re: wood under keytops [Re: ZBGM0]
Johnkie Online   content
500 Post Club Member

Registered: 06/04/11
Posts: 666
Loc: England
Yet another example of a simple question geitting 'way over the top' replies ......
The simple answer is :

Yes this is quite normal, being found on every piano that is played, nothing to do with picking noses, merely a question of natural oils and dirt getting deposited on the wedged shapes exposed part of the wood when the key is depressed.

The more a piano is used the more deposits you will find. wink
_________________________
Concert Tuner & Technician for the past 49 years in the United Kingdom
and Member of the Pianoforte Tuners' Association (London)
www.jphillipspianoservices.freeindex.co.uk : E-mail jophillips06@aol.com

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#2113678 - 07/06/13 10:32 AM Re: wood under keytops [Re: Johnkie]
TunerJeff Offline
Full Member

Registered: 06/22/11
Posts: 443
Loc: Oregon Coast
Such deposits are indeed 'normal'...for a given value of normal..and can be a clue to how much use the piano has had. You will probably notice that there is more visible in the middle of the keyboard, and less at the edges. If used by a student=beginner, they may still be clean and pretty outside the center two octaves of the piano.

I will also look at the music desk; to see fine scratches from music books from the bottom and spine. More scratches = more use. It is an easy thing to check. Scratches on the keycover, directly behind the keys, too. Flying fingers will leave their own tale of the use a piano has been through.

Pedals? The more use, the more wear on the surface of the pedals. I have encountered a very few old pianos where the damper-pedal has been worn completely through! But, even on newer instruments you can get a sense of the use the piano has had from taking a good look at the surface of the damper-pedal.

You may be right...a piano that has discolored keys, as you describe, is one that someone has certainly been playing! Not one that sat as a piece of furniture, only driven by a little old lady on Sundays to play hymns before church.
_________________________
Jeffrey T. Hickey, RPT
Oregon Coast Piano Services
TunerJeff@aol.com

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#2113838 - 07/06/13 04:05 PM Re: wood under keytops [Re: Johnkie]
Loren D Offline
2000 Post Club Member

Registered: 06/22/10
Posts: 2545
Loc: PA
Originally Posted By: Johnkie
Yet another example of a simple question geitting 'way over the top' replies ......
The simple answer is :

Yes this is quite normal, being found on every piano that is played, nothing to do with picking noses, merely a question of natural oils and dirt getting deposited on the wedged shapes exposed part of the wood when the key is depressed.

The more a piano is used the more deposits you will find. wink


Since I was one of the two replies, what about mine was over the top?
_________________________
DiGiorgi Piano Service (1984-2013)
http://www.digiorgipiano.com

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#2113975 - 07/06/13 09:48 PM Re: wood under keytops [Re: ZBGM0]
Dave B Offline
1000 Post Club Member

Registered: 08/01/11
Posts: 1734
Loc: Philadelphia area
What kind of stains??? Can you post a pic?

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#2114062 - 07/07/13 03:32 AM Re: wood under keytops [Re: Johnkie]
Olek Online   content
6000 Post Club Member

Registered: 03/14/08
Posts: 6390
Loc: France
Originally Posted By: Johnkie
Yet another example of a simple question geitting 'way over the top' replies ......
The simple answer is :

Yes this is quite normal, being found on every piano that is played, nothing to do with picking noses, merely a question of natural oils and dirt getting deposited on the wedged shapes exposed part of the wood when the key is depressed.

The more a piano is used the more deposits you will find. wink


Well we are lucky there as some pianist have also an itchy bottom wink
_________________________
Isaac OLEG - http://picasaweb.google.fr/PianoOleg pro

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