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#1994738 - 12/04/12 06:59 PM Which tuning pin to use?
woodfab Offline
Full Member

Registered: 12/06/05
Posts: 359
Loc: Stoneham, MA
I bought some (DENRO TUNING PINS Nickel with Blued Threads) and I've noticed that the threads feel rough like 200 grit sand paper.








The other pins I have laying around all have smooth threads.

My concern is that the rough threads will wear the pin block prematurely.

Or dose the blue coating smooth out after driving them in.

I'm planing to use them in a new pin block.

Any feedback is appreciated.


Edited by woodfab (12/04/12 07:09 PM)
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Dan (Piano Tinkerer)

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#1994792 - 12/04/12 10:55 PM Re: Which tuning pin to use? [Re: woodfab]
kpembrook Offline
1000 Post Club Member

Registered: 04/06/10
Posts: 1253
Loc: Michigan
One way to think this through is that these tuning pins are installed in hundreds of thousands of pianos. Why would you think you are going to have a problem?

This is not my favorite brand of tuning pin, but you can be confident that they will accomplish their intended purpose for decades. Proceed with confidence.
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Keith Akins, RPT
USA Distributor for Isaac Cadenza hammers and Profundo Bass Strings
Supporting Piano Owners D-I-Y piano tuning and repair

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#1994797 - 12/04/12 11:08 PM Re: Which tuning pin to use? [Re: kpembrook]
accordeur Offline
1000 Post Club Member

Registered: 06/23/06
Posts: 1118
Loc: Québec, Canada
Originally Posted By: kpembrook
One way to think this through is that these tuning pins are installed in hundreds of thousands of pianos. Why would you think you are going to have a problem?

This is not my favorite brand of tuning pin, but you can be confident that they will accomplish their intended purpose for decades. Proceed with confidence.


+1
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Jean Poulin

Musician, Tuner and Technician

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#1994861 - 12/05/12 03:50 AM Re: Which tuning pin to use? [Re: accordeur]
Olek Online   content
6000 Post Club Member

Registered: 03/14/08
Posts: 6369
Loc: France
I never have seen that, is not the blue coating the normal undercoat (they are blue pins that are nickel plated).?
Will you mike them?
_________________________
Isaac OLEG - http://picasaweb.google.fr/PianoOleg pro

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#1994863 - 12/05/12 03:55 AM Re: Which tuning pin to use? [Re: woodfab]
BDB Online   content
Yikes! 10000 Post Club Member

Registered: 06/07/03
Posts: 20766
Loc: Oakland
Nickel plated, then the threads are cut, and the threads are blued, like other pins.
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Semipro Tech

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#1994876 - 12/05/12 04:57 AM Re: Which tuning pin to use? [Re: woodfab]
Olek Online   content
6000 Post Club Member

Registered: 03/14/08
Posts: 6369
Loc: France
I did not see pins blued after threading but before, did not pay much attention but those Denro pins are uncommon here.
_________________________
Isaac OLEG - http://picasaweb.google.fr/PianoOleg pro

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#1994878 - 12/05/12 04:59 AM Re: Which tuning pin to use? [Re: woodfab]
Olek Online   content
6000 Post Club Member

Registered: 03/14/08
Posts: 6369
Loc: France
I did not see pins blued after threading but before, may be I did not pay much attention but those Denro pins are uncommon here.

Bluing is done before threading it can be seen on those as well.
Regards
_________________________
Isaac OLEG - http://picasaweb.google.fr/PianoOleg pro

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#1995045 - 12/05/12 01:16 PM Re: Which tuning pin to use? [Re: woodfab]
woodfab Offline
Full Member

Registered: 12/06/05
Posts: 359
Loc: Stoneham, MA
Thanks for comments.

I found this thread which answers some of my concerns.
<http://mail.ptg.org/pipermail/caut/2008-July/026824.html>
_________________________
Dan (Piano Tinkerer)

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#1995130 - 12/05/12 04:52 PM Re: Which tuning pin to use? [Re: woodfab]
Olek Online   content
6000 Post Club Member

Registered: 03/14/08
Posts: 6369
Loc: France
Ah I recall that conversation, have seen it yet. All the pins I use have smooth threads, what count to me is the precision in diameter and the elasticity of the metal.

The best pins to me are the Klinke "diamant" , the Biene are also good but the kinke are more springy. The Japanese NKG pins are somewhat soft in comparaison.

since a few years i consider the pin is acting in the tone way more than it is imagined.

Miking a box of pin gives generally 2 or 3 diameters but on the good brands there is much consistency, so the miking is just to avoid too small ones in the basses.

Miking is not as precise as it is thought, as the diameter may differ in different portions of a pin, no need to be too picky there (with the best pins, which are not really cheap also)
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Isaac OLEG - http://picasaweb.google.fr/PianoOleg pro

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