voicing tracks?

[Giovanni Voltaggio]

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Hi Don -

Nice to see your name here.  I took one of your convention classes  
('Action Centers') and it was one of the best classes I took.   
Listening to a new CD set while repinning an action really is a good  
way to get the new music learned.   Carrying around 100 proof vodka  
is helpful too, I'd have never thought of that.

Giovanni Voltaggio
Austin, Texas
                                                                         
                                                                         
                                                             .

On Oct 20, 2005, at 11:07 AM, Donald Mannino wrote:

> Michael,
>
> The "tracks" you see are common in Kawai hammers which have been  
> made very damp.  The marks themselves are made by the automatic pre- 
> needling machine which Kawai uses to soften up the shoulders.  The  
> machine needles both the front and the back sides, and the hammers  
> are later (or are supposed to be) filed in the voicing department,  
> so the  marks do not show.
>
> I have seen some hammers were the tracks show from lack of filing  
> in the factory, and also some which came to a very humid place (or  
> were steamed or treated with alcohol/water or something like that)  
> where the needle holes reappear.  If the marks only show on the  
> front side, this could indicate a, how shall I say it, 'less than  
> artfully done' steaming of the hammers.
>
> The hammers are not soft sounding when they come out of this  
> needling machine, because it doesn't go up to the tip, and it  
> doesn't needle higher than note 60 (or somewhere near 60 - could be  
> up to 64).  So the soft tone you and your customer have heard is  
> not related to the needle marks, but the fact that these needle  
> marks show and the tone is very soft makes me think that something  
> else has happened.
>
> As long as the hammers have not been needled or steamed or wet on  
> the very tip, it should be possible to file them some to get the  
> tone back.  Use 600 grit paper or higher, and use a lot of speed  
> and pressure to file up and over the hammers.  Try supporting the  
> mid-treble hammers and gang-filing them this way, and see if they  
> don't come back.
>
> For those who want more information on Kawai's voicing methods,  
> please try to catch one of my seminars - I'll be doing one in  
> Kansas City this Saturday and in Tyler, TX on Monday.  I'll be in  
> at the Texas State and North Carolina seminars also, but not  
> teaching voicing this time.
>
> Don Mannino RPT
> Kawai America (which, for those who don't know, does not sell or  
> support the Boston pianos)


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