It is oxidation. The white powder is lead oxide and if you breath enough of it you can significantly lower your IQ. dave _______________________________ David M. Porritt, RPT dporritt@swbell.net <mailto:dporritt@swbell.net> Meadows School of the Arts Southern Methodist University Dallas, TX 75275 _______________________________ -----Original Message----- From: owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org]On Behalf Of David ilvedson Sent: Monday, June 28, 1999 12:02 PM To: pianotech@ptg.org Subject: Re: Swollen key leads I always thought it was oxidation. In a similar situation, which I have only come across once on a birdcage piano, the lead has white powder on it. David Ilvedson, RPT From: cgpiano@webtv.net (Carman Gentile) Date sent: Sun, 27 Jun 1999 22:54:12 -0700 (PDT) To: pianotech@ptg.org Subject: Swollen key leads Send reply to: pianotech@ptg.org > This is to reiterate what one of our colleagues has already said: the > quickest and safest way I have found to trim down swollen key leads is a > sharp chisel. Just slice 'em off clean, no lead dust to deal with. > The lead slices easily. > > Can anyone tell me what makes the leads swell--I always thought of > lead as stable, inert, and not prone to corrosion. > > Carman Gentile, Redwood Chapter > > > > > David Ilvedson, RPT Pacifica, CA ilvey@jps.net
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