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#2192811 - 12/05/13 07:10 AM Steel wool on key pins
Spot Offline
Full Member

Registered: 08/21/13
Posts: 118
Loc: Australia
Before I go out to the shed and get to work I am just after confirmation that it is okay to clean up my key pins with steel wool.

I have wool size '0000'

Just a tad nervous about scratching the little suckers.
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Trainee tuner/technician

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#2192835 - 12/05/13 08:34 AM Re: Steel wool on key pins [Re: Spot]
Olek Online   content
6000 Post Club Member

Registered: 03/14/08
Posts: 6338
Loc: France
Negative, for me, cleaned with mineral oil (spirit) then polished if possible with polishing paste for nickeled metals, well dried with a dry cloth.
cork grease was often used as a lube on front pins.

Nothing is good as well, as is Mc Lube 44 (spray) coating of very slippery Teflon. (to be done far from pinblock)

Talcum or stearate are OK but hygroscopic (good for leather bushing however).

Some use Teflon fluid (CLP) in the bushing cloth, may be OK, I just dont know.
_________________________
Isaac OLEG - http://picasaweb.google.fr/PianoOleg pro

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#2192838 - 12/05/13 08:45 AM Re: Steel wool on key pins [Re: Spot]
David Jenson Offline
1000 Post Club Member

Registered: 10/22/06
Posts: 1947
Loc: Maine
If they are rusty, replace 'em.
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David L. Jenson
Tuning - Repairs - Refurbishing
Jenson's Piano Service
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#2192850 - 12/05/13 09:14 AM Re: Steel wool on key pins [Re: Spot]
Ed Foote Offline
500 Post Club Member

Registered: 05/03/03
Posts: 970
Loc: Tennessee
If the pins are brass, the steel wool will leave micro abrasions that will quickly finish off your key bushings. If they are plated, you can wool them, but you will need to finish with the #0000 and then polish with jeweler's rouge or a fine polishing compound.

These are 'non-durable' parts, and when they re damaged, replacing them is the professional way to go.
Regards,

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#2192855 - 12/05/13 09:25 AM Re: Steel wool on key pins [Re: Spot]
Olek Online   content
6000 Post Club Member

Registered: 03/14/08
Posts: 6338
Loc: France
Brass pins find today on Yamaha seem to be coated with a protective transparent film.
That could be machining marks, but as it does not go when the pin is polished I believe it is something else

No way to know what it is, may be something obtained with a chemical and electrical process.

I do not like steel wool generally speaking. I find polishing better done with the back side of linen abrasive cloth.

Replacing pins make a real enhancement in touch.(assuming good quality pins are used, that may not be as easy as it seem)


Edited by Olek (12/05/13 09:26 AM)
_________________________
Isaac OLEG - http://picasaweb.google.fr/PianoOleg pro

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