Hi Ed, Whoa, if you can do that bringing the string up, why not down also? Joe Goss RPT Mother Goose Tools imatunr@srvinet.com www.mothergoosetools.com ----- Original Message ----- From: <A440A@aol.com> To: <pianotech@ptg.org> Sent: Sunday, October 23, 2005 4:49 PM Subject: Re: Strate Mate...Was Remedial String Leveling > Joe writes: > > << The tool will take away most of the non-parallelness of the strings, but at > > the same time removes some of the elasticity of the string, limiting the > > amount of movement available to compensate for misdrilled agraffes. A catch > > 22, Save some work, make your work harder >> > > It is possible to lower a string, too. This often is needed with the > Steinway agraffe sections. (It can't be rocket science to drill the agraffes > evenly, and to tap the plate at 90 degrees to the string plane! And if it is, > S&S should hire the rocket scientists that seem to live at Yamaha, Schimmell, > Boston, and others! ) It blows my mind that such a high-profile instrument > should suffer from such a basic foundational sloppiness. > A steel rod with a saw kerf in the side near the end, wide enough to fit > over the string, can be used to put a slight kink in the string downward. I > have done this and found there to be no noticeable effect on that strings > inharmonicity, tone, or "voice". > I use a four inch long 3/8" rod with a saw kerf about 1/4" from the > end. I file the rod into a square that is, ultimately, about 1/4" on a side. > You may need to use two hack-saw blades stacked together to ge the kerf wide > enough. I file the rod flat before making the cut and after I have the right > notch cut in it, I file the uncut side until it can fit between the strings of > a trichord. It takes pretty good steel to have the strength to bend .045" > wire without breaking. O-1 properly hardened after shaping is good enough. > Smaller diameter wire can be kinked more easily with a smaller kerf. Coupled with > the tool to lift the wire, neither needs to make an extreme bend in order to > level the string. > Smooth all the edges so there is no nick placed in the string, and > round the bottom so that the occasional contact with the plate doesn't dig a small > pit ,(damhiK) in the finish. > Hope this heresy helps. > > > Ed Foote RPT > http://www.uk-piano.org/edfoote/index.html > www.uk-piano.org/edfoote/well_tempered_piano.html > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives
This PTG archive page provided courtesy of Moy Piano Service, LLC