This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Hi Roger, I will try it. My experience is that because of wear, the base of the balance pin is more or less large depending the place in the keyboard (measured with a micrometer), that is why I change them more often than not, and you know what is the result. If we retain the original pins, there are places where we need less fitting than others (I mean after having changed the bushings, and steamed the wood) . The job is time consuming but it can be done in less than 15 min. For new instruments your method seems a time saver. Do you have a fixture for holding the drill ? at what speed do you turn approx (in RPM, not in MPH !) Do you hold it straight or do you follow the hole angle (slightly slanted to the back on most keyboards) ? Thanks Isaac -----Message d'origine----- De : owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org]De la part de Baldwin Yamaha Piano Centre Envoye : samedi 7 septembre 2002 00:22 A : pianotech@ptg.org Objet : RE: key bushings I am sorry (not really but you see...) , I will try it but I don't buy it at first :>) as the pinning is showing more or less wear depending of the place in the keyboard, sizing the hole to a standard size with an electric drill may not allow the best fit (anyway not on original pins) . Hi Isaac, Just make sure the pin is straight and polished. We sell lots of new Yamaha's and in any month it saves us hours of key fitting. When I say a quick burst of the switch, it's not much more than half a dozen revolutions, just enough to burnish the hole. After steaming out old bushings, we re bush and fit in the same manner, we have encountered no problems at all. A set can be done in 5 mins or so. Try it and let me know what you think. regards Roger ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/42/69/6d/1e/attachment.htm ---------------------- multipart/alternative attachment--
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