[pianotech] agraffe replacement

[Ed Sutton]

Since you mention it, I checked a big handful of string height measuring 
sticks. I usually take at least three measurements in the tenor. A majority 
of them are very close and could be made level without counterboring through 
the plate!
No Hamburg Steinways in the bunch, though.
ES

----- Original Message ----- 
From: "John Delacour" <JD at Pianomaker.co.uk>
To: "Ed Sutton" <ed440 at mindspring.com>; <pianotech at ptg.org>
Sent: Monday, July 18, 2011 5:14 PM
Subject: Re: [pianotech] agraffe replacement


> At 16:58 -0400 18/07/2011, Ed  Sutton wrote:
>
>
>>The place where we want the strings to be level is at the strike point, 
>>not at the plate. It should be possible to fix a straight edge at the 
>>strike line and set agraffe heights with a string stretched from bridge to 
>>agraffe.
>>Not to claim I have done it this way, yet.
>
> On the 1960s Hamburg Steinways I've come across you'd probably need to 
> counterbore right through the iron plate to get the agraffe to hold the 
> string at the proper strike height at least in the middle of the scale. 
> Let's say this is a nice theory to be immediately consigned to oblivion, 
> since it could never be put into practice -- 
> that's supposing you mean a straight straight-edge.
>
> JD
>