Adding to what Wim said, verdigris IS capable of spreading from a contaminated birdseye to the flange. Replace the parts and be done. It is penny wise but pound foolish to not replace the parts now. I can guarantee new parts to be free from vertigris. I won't guarantee new flanges to remain free from verdigris using the existing contaminated parts. FWIW William R. Monroe On Tue, Jan 26, 2010 at 7:58 PM, David Nereson <da88ve at gmail.com> wrote: > In a case of vertigris, can just the flanges (and of course, center pins) > be replaced? It seems the parts most affected by vertigris are the center > pins and the bushings in the flanges or shanks. There might be a little > vertigris in the birdseye of a butt or wippen, but will that spread to the > bushings of new flanges? I could see replacing an entire set of wippens if > the jack and balancier pinning was also corroded in addition to the wippen > flanges, but if not, do ya really have to replace all the wippens? (I'm > trying to save the customer money by just replacing flanges and not having > to replace wippens, or in the case of a vertical, the hammer butts.) > --David Nereson, RPT > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100127/603671cf/attachment.htm>
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