---------------------- multipart/alternative attachment In a message dated 10/18/02 4:13:55 PM Central Daylight Time,=20 jonpage@attbi.com writes: > At 08:49 PM 10/18/2002 +0200, you wrote: > > > Andr=E9, > > > I too set all key dips to 10mm but would like to know one thing... > > > What is the consensus about where along the keystick does this 10mm ge= t > > > measured, > > > at the front, back a little further or over the front rail pin. > > > > > > Also, are there differences between these manufacturers about the dip=20 > > on sharps. >=20 > >We should always put the key dip tool (the little plastic Yamaha or=20 > Steinway > >block) at the front and feel with our finger the connection with the left > >key and the right key because very often the keys are not horizontal but=20 > lie > >at an angle (because the balance rail pins are usually not exactly 90=BA. > >If the key is slightly falling to one side and you measure for instance=20 > only > >the right side you get a distorted picture. > >I have made it my custom to very fast shift the key dip measure block fro= m > >left to right and my finger goes along, feeling the differences on either > >side. Most manufacturers use 12 mm for the sharps. >=20 > Yes, I split the difference 'left-to-right' when measuring with the block=20 > and set the sharps' height ~12mm, but that did not answer the questions. > Not having either of the above mentioned key dip blocks, I can't measure=20 > that spec. I have a 3/8" block with some punchings glued to the bottom, > sanded scientifically set to .390 (just a bit back making the front - not=20 > the overhang - making the front 10mm). >=20 > Actually, the punchings are glued to what some may call the top,=20 > the side with the overhang. I was shown to place the dip block 'upside=20 > down' > on the key, thereby having the overhang on the block mated to the= =20 > overhang on the key while depressing. It is a lot faster than aligning > the overhang to the adjacent keys once depressed. >=20 > I've heard differing theories on 'dip' - where to measure and to how=20 > judge/calibrate sharp dip, and am curious to find out what someone with=20 > your vast > experience can boil it all down to... and what if any are the factory's=20 > particulars in these regards. >=20 > Warm greetings from sunny Cape Cod, >=20 > Regards, >=20 > Jon Page, piano technician > Harwich Port, Cape Cod, Mass. > mailto:jonpage@attbi.com > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >=20 >=20 Jon and Andre, the one thing I have learned over the years is that nothing i= s=20 set in stone. I believe the 10mm dip is a good figure that I use myself as=20= a=20 starting point and I must admit it works quite well in most cases. But with= =20 all engineering and designs not being equal I find there are quite a few=20 times it is necessary to compromise a little. There is a key dip tool from Mazzaglia Tools (978-372-1319), I have used for= =20 a number of years and find it magnificant for setting an extremely consistan= t=20 key dip. It consists of a 400 gram weight that rests on the key top (with ears to=20 assure consistancy in placement) and a cross piece that rests on the two=20 adjacent keys centered on a pin adjustable for heighth to guage the correct=20 dip dimension. It is not as functional on sharps but I just use the weight=20 in conjuction with a Jaras dip tool to set the dip on sharps. David Koelzer Vintage Pianos DFW ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/28/26/91/fa/attachment.htm ---------------------- multipart/alternative attachment--
This PTG archive page provided courtesy of Moy Piano Service, LLC