Steven, I'd suggest starting with what you have. Assess the current regulation paying particular attention to hammer line, key height, and dip. Is it in the ball park? If so, duplicate the existing thickness. If not, adjust accordingly. Having said that, however, I almost always find that trying to out-think the amount of punchings to place on the front rail doesn't help me. I'm usually better off eyeballing what I need and putting essentially the same amount of punchings across the front rail, sharps and naturals - maybe tapering across the compass if it is obviously needed. Typically, I'll start with the felt, a few thick cards and maybe one or two thin cards. That's it. Then when I get to that point in regulation, you just adjust as necessary. If all you are doing is replacing the front rail punchings, remove the old ones on #1, duplicate the thickness as you eyeball it, install new, and then make fine adjustments to regulate the dip. Do this at the piano, all the naturals first, then all the sharps. Of course, for this to be effective, the rest of the action should be in good regulation as well. Sell that job if you need to, it will make your life easier and will leave you with well completed project. If you just regulate dip without addressing hammer line, key level, etc., you'll be adjusting dip to compensate for shortcomings in the other regulation parameters. Probably not a good idea. ;-] William R. Monroe Hello all, > > I went to a small Schaff & Sons grand yesterday that had a drink spilled > into the keyboard at some point in it's life. Diagnosing the liquid aside > the front rail and balance rail punchings are covered in a black goo and are > hard. (Can a goo be hard?) Anyway what would be a suggested punching stack > to start with so that there would be room for removals if necessary when the > regulation begins? Any help is appreciated. > > Thanks, > > Steven Hopp > Midland Texas > (50 MPH wind here today! Hang on to your hats) > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech_ptg.org/attachments/20090401/8446942c/attachment.html>
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