Baldwin SD

[david at davidandersenpianos.com]

It entails chucking up Q-tips in a drill, and polishing the agraffe holes
with them them.  There was an article last year in the Journal written by
Paul Revenko-Jones, with very groovy pictures and everything.
Labor-intensive, but if you've ever encountered those agraffe zings
Avery's talking about, especially in a recording studio, as I have twice, 
you start to see the value of preparing agraffes.

The best to you, my brother......

DA




> David,
> Enlighten me about the Revenko-Jones-Protocol-prepared agraffes.  I'm not
> familiar with them.
> Tom Servinsky
> ----- Original Message -----
> From: <david at davidandersenpianos.com>
> To: "Pianotech List" <pianotech at ptg.org>
> Sent: Saturday, April 01, 2006 5:29 PM
> Subject: Re: Baldwin SD
>
>
>>> List (& especially any of you major rebuilders out there),
>>>
>>> Do any of you have any direct experience with an SD-6 #118127 (1952 I
>>> was told)?
>>
>>> My question is, there is a tone problem in the middle agraffe
>>> section. (It's so hard to describe
>>> sounds in an e-mail.) The dealer kept saying he thought it was
>>> primarily a hammer fitting/string
>>> leveling problem. Yes, there is some of that that needs to be done.
>>> But I believe it's a problem
>>> in the agraffes themselves. This isn't a hammer fitting type of
>>> sound. It's a distorted/zinging
>>> kind of sound. Like a termination problem or something not seated
>>> well.
>>
>>> Am I on the right track about the agraffes? Thanks.
>>
>>> Avery Todd
>>
>> Yup, I think you are; I've had the same thing happen on a couple
>> different
>> pianos with original agraffes---kind of a metallic "emphasis" on a
>> certain
>> overtone in the note played and exacerbated by volume.
>>
>> Here's what fixed it, TEMPORARILY, for me:  let the string down one
>> quarter turn; the kink or bend in the string as it enters the agraffe
>> needs to be "massaged" to a point where it's "straighter."
>> Do that, return the string to tension, listen and repeat until the sound
>> diminishes.  The real fix?  Obvious.  Restring the entire piano with
>> new,
>> Revenko-Jones-Protocol-prepared agraffes.
>> This would seem to be a great leverage point in the purchase price.  The
>> strings are 50 years old; they're done, especially for a school
>> application.  Sounds like a no-brainer to me.
>> Have fun.
>>
>> David Andersen
>>
>>
>>
>>
>>
>>
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