I don't recollect that they were made for purchase. I remember back in the 70's seeing a diagram, on how to make one. It seemed fairly simple. Mind you that is when I was repairing electronic organs as well. It might have been a Journal article. John Ross ----- Original Message ----- From: "Pianoman" <pianoman at accessus.net> To: <pianotech at ptg.org> Sent: Tuesday, December 30, 2008 7:16 PM Subject: Re: [pianotech] Verdigris in Action Centers Anyone know where a zapper can be purchased? James James Grebe Since 1962 Piano Tuning & Repair Creator of Handsome Hardwood Products( 314) 608-4137 1526 Raspberry Lane Arnold, MO 63010 Researcher of St. Louis Theatre History BECOME WHAT YOU BELIEVE! www.grebepiano.com ----- Original Message ----- From: "Don Mannino" <donmannino at ca.rr.com> To: <pianotech at ptg.org> Sent: Tuesday, December 30, 2008 4:07 PM Subject: Re: [pianotech] Verdigris in Action Centers > David, > > > > 4 possible solutions: > > > > 1. Wash and lube. Quickest. Apply Dry-cleaning solution (VMP Naphtha) > followed by some form of lubricant. Temporary. > > 2. Wash and repin. More work. Disassemble parts, wash the wood and > bushings > with Naphtha, blow them out with low-pressure compressed air, burnish / > ream > with broaches, repin. Longer lasting, but still temporary. > > 3. Evaporate, wash, and repin. Some have had success with parts only > containing the original waxy goop (which is likely very rare by now - most > have been lubricated with something over the years to try to free them > up). > You can try "Zapping" them in place, as with the original Francis Mehaffy > zapper, then lubing the parts. Or disassemble them, zap the bushings > separately, then dry-clean and repin. Still temporary, in my experience, > although some proponents claim it is permanent. I think permanence in > this > case might equal "I never heard back from them." Anybody have a zapper > they > want to send to David to try?? > > 4. Replace the parts (of course). Expensive but permanent. > > > > Recommendation: Inform the piano owner that anything short of replacing > the > parts will most likely be temporary, and write it on your receipt. Have > them sign a copy, and keep it in your files. I have had customers sell > pianos I did temporary jobs on, and tell the buyer that it was completely > rebuilt and warranted by me! > > > > Don Mannino > > > > > > From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On > Behalf > Of Paul Kunz > Sent: Tuesday, December 30, 2008 7:29 AM > To: pianotech at ptg.org > Subject: [pianotech] Verdigris in Action Centers > > > > Greetings: > > > > I am wondering what the latest recommendations are for severe verdigris on > old Steinway Action Centers. Reaming and repining has never to my mind > been > a permanent solution; therefore in the past I have tended to replace > whippens and shanks. However, in a very old Steinway when the customer is > not willing to spend the money, and repining appears to be only temporary > and time consuming, what type of chemical treatment has been found to be > the > most effective. > > > > Any suggestions would be greatly appreciated. > > > > Thank you, > > David C. Kunz > > John M.Ross Windsor, Nova Scotia, Canada.
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