<HTML><HEAD></HEAD> <BODY> Made by who?  You?  I'dl like a= sample... David Ilvedson     ----- Original message= ----------------------------------------> From: antares= <<A= href="mailto:antares@euronet.nl">antares@euronet.nl</A>> T= o: Pianotech <<A= href="mailto:pianotech@ptg.org">pianotech@ptg.org</A>> Rec= eived: Thu, 11 Nov 2004 18:32:09 +0100 Subject: Re: About= after touch On 11-nov-04, at 3:19, William R. Monroe= wrote: <BLOCKQUOTE> One other issue that I'm still not convinced is= not part of it, is the jack to knuckle placement.  There is= still plenty of room in the window to allow for more aftertouch,= and thus more clearance of the jack from the knuckle, but I= already have about .055" of aftertouch (measured by placing= .055" of punchings on top of front rail felts and seeing that= escapement just barely occurs when the key is depressed). = I hesitate to think that more aftertouch would be= appropriate.  </BLOCKQUOTE> One of the very= great developments of our business here in Holland is the new= front punching called "Grand Piano Punching". I have worked= for years on this and we now offer this punching world= wide. And why then is it so very nice one could= ask? Because it has a fantastic homogenous density, but at= the same time it is not too hard. It makes for a very sharp= after touch, and thus for the sharpest regulation= possible. As I said, it took me years to get this together,= and it is even better than the Yamaha or Steinway punching= because of its density and firmness. I wrote about this= before : after touch should be ± 0,4 mm, meaning that after= drop, and after the landing of the hammer, we should be able to= move the hammer up 0,4 mm by softly pressing the= key. If you see no movement at all, you have no after touch. If= you see a lot of movement, your front punching is too soft or= you have too much after touch.... which is it? That's why you= need to make sure that before you start a regulation, your front= punching is of the right firmness. I will explain once= more : A key is like a sea saw. Usually, we find an old= car tire under both sides of the sea saw to soften the impact.= Nevertheless, a little child sitting on the high end of the sea= saw will bump upwards slightly because of the impact at the= lower end. Now, if we take away the tires, the impact will be= much harder and it will hurt the behind of the child coming= down, but it will also cause the other child to almost get= airborne, because the force of the impact is much= stronger. That is the an analogy in regard to a more firm= front punching : It causes a more intense transfer of energy and= thereby creates a louder tone. Your regulation can be more= precise, thereby giving you the maximum tonal output. I= often ask a critical technician or pianist to listen to a= particular tone and to feel its touch. I then exchange the front= punching with our own front punching, and I ask the same person= to listen and feel again. They always are flabbergasted by= the result. friendly greetings from André= Oorebeek "where Music is, no harm can= be" </BODY></HTML>