Randy, We have seen this being done in severaly European factories with a file, so it is common there. Also, David Sanderson is doing it ot his strings which he makes and sells under the name of AccuString. A catchy name - wonder where he got tht Accu idea? Anyway, you can talk to him about it as he has done quite a bit of experimenting, especially with adjusting the ends of the windings to control inharmonicity. Ed Hilbert, RPT Vermont Chapter
This PTG archive page provided courtesy of Moy Piano Service, LLC