Hi Fred, As I try to explain in my article, lead oxide isn't dangerous. And the only time the lead presents a danger is when it is removed from the player mechanism. And then, it is only a danger if small children are playing with the removed tubing. That's because the lead oxide is sweet, and they might start chewing on the removed pieces of tubing, and thereby ingest the lead, which is highly toxic and causes brain damage. Now, when the tubing gets corroded to the point where you can see the white 'pimples' on the outside of the tubing, it's corroded almost all the way through. At that point, it usually starts leaking enough to cause ciphers (notes that play all the time). At that point, it has to be changed. The lead oxide that falls off the inside of the tubing is in the form of a very fine powder. First, it gets sucked into the pouch well. From there, it can get sucked through the bleed cup and into the valve chamber, where it can get embedded in the leather valve facing. And since it's an oxide with free electrons, it can cause the metal valve plates to become corroded. As you can tell, it's a cycle of events that ends up causing a lot of unnecessary damage, which can be eliminated simply by removing the lead tubing and replacing it with rubber. And while the new rubber tubing won't last as long as new lead tubing, the rubber tubing is much easier to replace 'the next time', whereas lead tubing is very difficult to replace, and it's very costly because almost no one uses it anymore. Hope this helps clear things up. Musically, John A Tuttle Player-Care.com P.S. Portions of this email might be used for an addendum to the webpage about lead tubing. =========================================================== On 7/7/2010 6:59 PM, Fred wrote: > Below is the result of your feedback form. It was submitted by Fred on Wednesday, July 7, 2010 at 18:59:38 > --------------------------------------------------------------------------- > > realname: Fred > > > comments: Hi John... i recently found a Waltham upright player that has been > restored..valves, pnemantics, bellows, airmotor keys, etc.. it plays like a > champ with only the foot pedals... my question is one regarding your article > on lead tubing from the tracker bar... when this was restored he left the > lead tubing in...is there really THAT much of a "hazard" leaving it in or > should it be changed out.... also what about any lead powder that may be > inside the pneumatic sytem? is this really a concern or am i being a little > too over concerned about this © just would like your input... thanks... > Fred
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