I made one many years ago, but have since lost it. It was made using a transformer I purchased from an electronics store. I don't remember the output voltage. Does anyone know what the output voltage should be? Al G -------------------------------------------------- From: "John Ross" <jrpiano at win.eastlink.ca> Sent: Tuesday, December 30, 2008 6:34 PM To: <pianotech at ptg.org> Subject: Re: [pianotech] Verdigris in Action Centers > 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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