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Topic Options
#1979599 - 10/28/12 09:33 AM Re: Bluthner rebuild [Re: RK4211]
Olek Offline
7000 Post Club Member

Registered: 03/14/08
Posts: 7904
Loc: France
yes if I buy non bored heads at the factory, for Bluethner the price is normal. then I have to bore al hammers with 0 degres angle, our boring jigs are not well adapted to that kind of job, as they use the side of the head as a support generally, there the side angle will differ depending of the location of the hammer
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#1979994 - 10/29/12 07:45 AM Re: Bluthner rebuild [Re: BDB]
RK4211 Offline
Junior Member

Registered: 10/19/12
Posts: 9
Loc: JHB, South Africa
Originally Posted By: BDB
A pinblock serves one purpose, to hold the pins against the tension of the strings while allowing them to be tuned properly. If you are experienced with Delignit, it should be fine. If you are not, you should not be trying it out on a good piano. Are you aware that you need to build up the pinblock?


I want to scan in the frame and invert the image. I will then use the inverted image and use a 3D milling machine to cut the new pin block. This will avoid having to build up the pin block and the milling machine will mill away the troughs.
This should make the fit more accurate and the work required will be less. The result should also be excellent as scanning and milling are to the micron in required.

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#1979997 - 10/29/12 07:51 AM Re: Bluthner rebuild [Re: Olek]
RK4211 Offline
Junior Member

Registered: 10/19/12
Posts: 9
Loc: JHB, South Africa
Originally Posted By: Kamin
Bluethner hammers :

I consider that the hammers sold by the factory are necessary if one want to keep the original tone.
They are all bored 90° on the shank, but sliced with an angle.

The only hammers that can be gang filed all along

I have compared Bluethner mounted with standard hammers, and with the good ones : the tone is really different.

(also they have a very good felt and pressing, voicing is very quickly done, a pleasure to work with (but provide them strings height and flange center height so you receive the good hammers for your instrument)

PS Pinblock is a part of the sound body on first grade grands (due to transmission of vibrations within the case and keybed, the differnce when delignit is used is obvious)

Then, Delignit is a good material also, for instance on a piano where the case is supposed to be inert and the iron plate is more active to colour the tone, the pinblock can be heavy and non resonant, but maple traditional blocks are always better (for pin tightness also I prefer them)


So the hammers from Bluthner is what I will get. How do you go about ordering the hanners? Do Bluthner sell and ship international?

I am now in two minds about either the Deliginit or the Maple-Buldoc pin block.

The original Bluthner one looks to be three laminated sections of wood. A large thick layer, a thinner middle layer and then a medium thickness lower layer. This has lasted about 100 years.

What is the oldest Delignit block you are aware of?

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#1979998 - 10/29/12 07:54 AM Re: Bluthner rebuild [Re: David-G]
RK4211 Offline
Junior Member

Registered: 10/19/12
Posts: 9
Loc: JHB, South Africa
Originally Posted By: David-G
RK4211, I am very interested in old Bluthners, and I would be very grateful if you could post a picture or two of your piano. Particularly of the strings and plate.


I will take some photos tonight and try and post tomorrow.

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#1980002 - 10/29/12 08:20 AM Re: Bluthner rebuild [Re: RK4211]
pianolive Online   content
Full Member

Registered: 09/09/11
Posts: 327
Loc: Europe
You can order hammers directly from Bluthner.
Or you can send some samples to Abel and they will make them for you. Send them the first and last hammer with shanks from each section in the piano.

Go for the Buldoc pin block.

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#1980054 - 10/29/12 11:59 AM Re: Bluthner rebuild [Re: RK4211]
BDB Online   content
Yikes! 10000 Post Club Member

Registered: 06/07/03
Posts: 21928
Loc: Oakland
Originally Posted By: RK4211
Originally Posted By: BDB
A pinblock serves one purpose, to hold the pins against the tension of the strings while allowing them to be tuned properly. If you are experienced with Delignit, it should be fine. If you are not, you should not be trying it out on a good piano. Are you aware that you need to build up the pinblock?


I want to scan in the frame and invert the image. I will then use the inverted image and use a 3D milling machine to cut the new pin block. This will avoid having to build up the pin block and the milling machine will mill away the troughs.
This should make the fit more accurate and the work required will be less. The result should also be excellent as scanning and milling are to the micron in required.


You have a 3D scanner? Let us know how this works out for you.
_________________________
Semipro Tech

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#1980057 - 10/29/12 12:09 PM Re: Bluthner rebuild [Re: RK4211]
Silverwood Pianos Offline
4000 Post Club Member

Registered: 03/10/08
Posts: 4234
Loc: Vancouver B. C. Canada
Originally Posted By: RK4211

What is the oldest Delignit block you are aware of?



I have come across multiple laminated pin blocks in small Canadian made uprights from the sixties, just not the brand name Delignit.
_________________________
Dan Silverwood
www.silverwoodpianos.com
http://silverwoodpianos.blogspot.com/
http://www.facebook.com/SilverwoodPianosDotCom
"If you think it's expensive to hire a professional to do the job, wait until you hire an amateur."

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#1980226 - 10/29/12 06:58 PM Re: Bluthner rebuild [Re: RK4211]
David-G Offline
1000 Post Club Member

Registered: 01/17/06
Posts: 1245
Loc: London
Originally Posted By: RK4211
Originally Posted By: David-G
RK4211, I am very interested in old Bluthners, and I would be very grateful if you could post a picture or two of your piano. Particularly of the strings and plate.


I will take some photos tonight and try and post tomorrow.

That's very kind, I look forward to seeing them.

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#1980400 - 10/30/12 04:07 AM Re: Bluthner rebuild [Re: pianolive]
RK4211 Offline
Junior Member

Registered: 10/19/12
Posts: 9
Loc: JHB, South Africa
Hi,
The hammers in the piano are not correct. They have not been shaved as per the Bluthner method. The shanks have been sort of drilled at angles
I would then order them from Bluthner as they should have the correct angles and set up.

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