I have a Hamburg D that has a little space between the stack and the keyframe when on a bench. I would imagine I should put it back in the piano without screws and check again? Anything particular in the shimming material? I would think it should be wood? David Ilvedson, RPT Pacifica, CA 94044 ----- Original message ---------------------------------------- From: A440A at aol.com To: pianotech at ptg.org Received: 7/8/2008 9:08:36 AM Subject: Re: Keyframe Bedding >Dale writes: ><< I like to set the keybed/keyframe contact with keys off & action >screwed to frame (as per Yamaha) so I can really understand the unloaded strength >of >the keyframe I am working with. >> >Greetings, > I think I get better results when I bed the keyframe alone, then set the >action on it and shim any feet that are not on the cleats. This precludes any >internal flex, and I believe, can make the action bedding less climate >sensitive, ie, if there is a gap between the action and its footing, screwing them >together creates a stress between the wood and the metal, in effect, a spring. >The metal is not going to fatigue so the wood will constantly work with >changes in humidity. > I have done it this way many times (going on 25 years of watching lots of >my rebuilds), and I see stable results at the school between seasons . It is >more labor intensive, but, I have found that long term returns make it a good >investment. >Regards, >Ed Foote RPT >http://www.uk-piano.org/edfoote/index.html >www.uk-piano.org/edfoote/well_tempered_piano.html > <BR><BR><BR>**************<BR>Gas prices getting you down? Search AOL >Autos >for fuel-efficient used cars.<BR> >(http://autos.aol.com/used?ncid=aolaut00050000000007)</HTML>
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