List, This subject has been flogged to death many times, over many years, with the same things said many times over. That being the case, I had just as well add my opinion to the server clog. One more couldn't hurt. I don't care how WD-40 was originally intended to be used. I don't care what it's made of, and what it's purported benefits may be. I also don't care how many glowing endorsements it receives from techs who use it as a flange lubricant. I do care that I have seen what happens to applied WD-40 as it ages and, despite any apparent short term benefit it seems to manifest, I have personally witnessed that it will eventually turn into sticky crap, given time, in whatever application I have chosen to use it. That is enough for me. If that isn't enough for the techs who choose to use as a flange lubricant in a piano they can't afford to replace, I suppose they can only hope that they retire before the self destruct activates. I spend way too much time trying to figure ways NOT to screw something up to have any sympathy for them when they get the call. The likely detrimental long term result is, in my opinion, too high a price to pay for the short term benefits. There are better products, with lower risk factors. I see no logically defensible reason to use the stuff in action flanges. Do it the hard way, THINK. Thanks for listening. Ron
This PTG archive page provided courtesy of Moy Piano Service, LLC