On Dec 14, 2007 11:56 PM, David Ilvedson <ilvey at sbcglobal.net> wrote: > Been there...done that...like you I just couldn't bring myself to dump > them... > > I believe I gave that box of keys to Mr. Love for key plugs?.... > > David Ilvedson, RPT > Pacifica, CA 94044 > > ------------------------------ > Original message > From: "Michael Magness" > To: "College and University Technicians" > Received: 12/14/2007 5:26:32 PM > > Subject: Re: [CAUT] Yamaha sharps > > > > On Dec 14, 2007 11:00 AM, Jeannie Grassi <jcgrassi at earthlink.net> wrote: > > > Alan, > > This also happened with a Kawai grand. I ended up buffing out the > > whites > > just fine, but Kawai opted at the time to replace the sharps. Same > > Japanese > > key maker supplying both companies?? > > > > Now I am taking care of a mid-80 C3 with unusually dirty keys and I > > think it > > might be the same thing. Does anyone know the exact years that this > > problem > > existed? Thanks > > jeannie > > > > > > -----Original Message----- > > From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of > > Alan > > Crane > > Sent: Thursday, December 13, 2007 4:10 PM > > To: College and University Technicians > > Subject: Re: [CAUT] Yamaha sharps > > > > At 08:53 AM 12/13/2007, you wrote: > > > Yesterday I had an unfortunate experience cleaning keytops. Yamaha > > >C-2 about 20 years old. ... a very thin clear finish on the sharps - > > >blistered so as to look somewhat > > >white. > > > > Fred, > > > > This is probably way off-the-wall but... > > In the mid-80s, about 20 years ago, I was working for the local > > Yamaha dealer (actually on staff there). > > Yamaha had just recently come out with their "Ivorite" keytops > > ________ wonderful feel to the plastic, supposedly a milk-based > > formulation (at least that was the hype at the time). > > But it wasn't too long before they began having problems with the > > Ivorite keytops getting dirty and being impossible to clean. > > It was a real problem for them and they even had technicians going > > around the country replacing entire key sets under warranty with the > > same problem cropping up again and again until... they discovered > > that the Ivorite wasn't getting any more dirty than normal plastic > > keytops do and it was cleaning up just fine. > > The stuff that wasn't coming off the keytops (that everyone had > > thought was dirt) was the stain from the black keys, a new > > formulation which evidently wasn't as stable as it was supposed to be > > and was being transferred to the Ivorite by the pianists fingers > > and/or the cleaning cloth. > > We were told that Yamaha immediately fixed the stain formulation and > > I never doubted it since the problem went away. > > However... I'm wondering if it isn't possible that, prior to finding > > the "right" stain formulation, the factory didn't start spraying on a > > clear-coat sealer in an effort to keep the problem stain on the > > sharps where it belonged. > > Now, this is all just daydreaming on my part and I have no evidence, > > anecdotal or otherwise, to support it. > > Its almost certainly not what you're dealing with... but... OTOH, the > > stain problem was very real while it lasted... and the time frame is > > about right... > > Just a thought. > > > > > > > > Regards, > > > > Alan B. Crane, RPT > > School of Music > > Wichita State University > > alan.crane at wichita.edu > > > > > > > Hi Jeannie, > > I have a C3 from early 1977 that just missed having those type of keys, I > have replaced them on a C3 from '86, a C5 from '84 and I'm about to ship a > set for a C7 from '87 so I would say from late '77 or early '78 through the > late '80's probably '89, when they began replacing the key sets which is > what they did when the pianos were still in warranty. I still have the old > keys from the "86 C3, they were barely 3 years old and Yamaha told me to > throw them away! Except for being gray not white they were in excellent > shape and I couldn't bring myself to do it. I repacked them in the box they > shipped the new ones in and I've had them ever since! > > Just call Yamaha with the serial number and they will tell you. If they > are in that group they'll send a shipping box and an address to ship them > to. Figure on about 2 or 2 and a half weeks downtime for the piano. The > person that recovers them doesn't remove any wood from the keys so there is > no adjustment to be made just removal, packing, shipping and replacement. At > least that's what they claim, I'm shipping after Christmas, I'll let you > know. <grin> > > Mike > -- > People who say it can't be done, should not interrupt those of us who are > doing it. > Michael Magness > Magness Piano Service > 608-786-4404 > www.IFixPianos.com <http://www.ifixpianos.com/> > email mike at ifixpianos.com > I was holding out for that day when I needed to rebush a set and could use these as interim forgetting of course that I still would have no sharps! So I've decided to use them for riblets, nice spruce and in some cases I can leave the weights in for mass loading the sound board! Mike -- People who say it can't be done, should not interrupt those of us who are doing it. 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