OK. I haven't done this myself yet, but have read of kerfing a key frame. Or, if that's not what is needed, you can lightly sand the front of the keyframe with strips of emery cloth. Procedure: find where the knock is, sand where the knock isn't. Pull the strip at an angle. On Sun, Mar 3, 2013 at 9:59 AM, Ken and Pat Gerler < kenneth.gerler at prodigy.net> wrote: > John, > On the front, where it is obvious when you play a key. It is like the the > key frame is “bowed” down in the middle. > > Ken > > > *From:* John Formsma <formsma at gmail.com> > *Sent:* Saturday, March 02, 2013 8:52 AM > *To:* Pianotech List <pianotech at ptg.org> > *Subject:* Re: [pianotech] Yamaha 1962 G-3 two pedals bedding key frame > > Knocking where? Front, middle? > > > On Sat, Mar 2, 2013 at 8:33 AM, Ken and Pat Gerler < > kenneth.gerler at prodigy.net> wrote: > >> ** ** >> Hello all, >> I have a situation where the "knock" is very noticeable that the key >> frame is knocking against the key bed. I see no adjustments anywhere to >> correct the problem. As a temporary solution in the treble, I folded >> several business cards in the gap to quiet the "knock". I suspect this was >> not originally a product for the US but brought in by someone that >> purchased it while overseas and brought it back with them. >> >> The cheek blocks have a metal plate that allows for front to back >> adjustment, but no adjustment for "up/down" adjustment. >> >> Anyone experienced this before and what was the resolution? >> >> Thanks in advance, >> >> ------------------------------------------- >> Ken Gerler, RPT >> kenneth.gerler at prodigy.net >> >> > > > > -- > John Formsma, RPT > Blue Mountain, MS > -- John Formsma, RPT Blue Mountain, MS -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://www.moypiano.com/ptg/pianotech.php/attachments/20130304/92502abc/attachment.htm>
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