You can try sealing it from the air but more than likely it's caused by a bad mix of recycled lead. Like the expanding action brackets. Maybe lead from car batteries got in there. Lead is very non reactive in its pure state and a neutral enviroment. Will the polyurethane seal off sulfuric acid? Keith Roberts On Sun, Dec 20, 2009 at 9:06 PM, <johnparham at piano88.com> wrote: > I've never tried it, but why not just zapping it with a quick shot of > clear polyurethane spray to seal the leads? > > -John Parham > Hickory, NC > > > -------- Original Message -------- > > Subject: [CAUT] key leads > > From: "David Ilvedson" <ilvey at sbcglobal.net> > > Date: Wed, December 16, 2009 11:04 pm > > To: pianotech at ptg.org, caut at ptg.org > > List, > > I have perused the archives about oxidizing key leads. Seems to have > been around 1996 or so...I have an Apollo Grand with the beginnings of > oxidizing leads. Some sticking keys etc. My first inclination is to just > chisel off and seal with lacquer or something like that. Anyone want to > hazzard how long it would take to remove the leads and replace with new? I > probably should give the customer that option... > > I'm guessing 1 hour for travel back and forth. 1 hour to disassemble > and reassemble action. 1 hour to remove leads and a couple to swedge in > new ones...am I dreaming here? What do you think. > > David Ilvedson, RPT > > Pacifica, CA 94044 > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/caut.php/attachments/20091220/3a79cdbf/attachment.htm>
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