JD writes: >>One thing I can guarantee is that if you immerse, bury or boil iron spoons in the evilest tallow you can find for five years, when you remove them you will not find a trace of Vertigris or even verdigris on them. <, Yes, I agree. Verdigris is only found where brass, copper material is. I use mutton tallow on the end pins of grand actions. Nothing I have found in the trade works better or longer at keeping them quiet. After a year or two, the brass plates in the cheekblocks showed small stains of , you guessed it, green. The exact same color as the verdigris. There was no coloration on the steel pins though. I think verdigris is copper oxide, iron wouldn't react like that. Regards, Ed Foote RPT http://www.uk-piano.org/edfoote/index.html = -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100217/26555aa7/attachment.htm>
This PTG archive page provided courtesy of Moy Piano Service, LLC