<!doctype html public "-//w3c//dtd html 4.0 transitional//en"> <html> antares wrote: <blockquote TYPE=CITE>I personally have come to the conclusion that there is actually just one key dip and that key dip is 10 mm sharp, and no more than 10 mm. All piano makers in the world have a key dip of 10 mm except the earlier Pleyels, Blüthners and modern Steinways.... although, when I had my lessons at Steinway the head technician at the regulation department told me that he thought a key dip of less than 10 mm on any Steinway was bloody baloney.</blockquote> First off... I have 6 manuals in front of me. 4 of them official manufacturers specifications. I quote from these for your edification. Schimmel Grands <blockquote>Over 2 meters --- key dip 10.4 -10.8 Under 2 meters -- key dip 10.2 - 10.6 Blow ranges from 44 to 46 in the specifications, and 44 to 48 in the grand requlating guide.</blockquote> Schimmel Uprights <blockquote>Key dip 10.2 +/- 0.2, and 9.9 +/- 0.2 for pre 1985 models. blow 43 / 46</blockquote> Yamaha grands <blockquote>Key dip 10 mm +/- 0.2. Laroy Edwards gives 10 mm and says temper this with common sense and a knowledge of action function.</blockquote> Kawaii Grands <blockquote>Key dip for KG-8 is 11 mm, all other models is 10.5 blow is 46 -48</blockquote> I could go on and document factory specifications that range from 9.5 to 11 mm quite easily. Again I must insist that there is no basis for demanding that the 10 mm key dip has shown itself to be the best. Nor is it true that all or even the extreme majority of manufacturers specify this. I will go along with that close to 10 mm is a good norm, and it is indeed the one I choose. But to declare it as a universal holy grail I will not. Interestingly enough.... David Loves high ratio / low SW configurations push one rather in the direction of shallow key dip concerns... tho just barely. But thats the other thread. <blockquote TYPE=CITE>  In regard to making key dip : I had to train one whole week to learn what a perfect key dip is.</blockquote> Hmmm... interesting concept... the perfect key dip. Could you describe that for us in terms of regulating specifications ? <blockquote TYPE=CITE>  After that, when I read about various key dips, I always feel this urge to open up the magic box and type in the words I just type in.</blockquote> Heck Andre... agree or not... I respect and admire your advices and expererience in all things piano ! <blockquote TYPE=CITE>  Most elevated and friendly greetings.....  </blockquote> Likewise Andre :) -- Richard Brekne RPT, N.P.T.F. UiB, Bergen, Norway <A HREF="mailto:rbrekne@broadpark.no">mailto:rbrekne@broadpark.no</A> <A HREF="http://home.broadpark.no/~rbrekne/ricmain.html">http://home.broadpark.no/~rbrekne/ricmain.html</A>  </html>