<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=Windows-1252"> </head> <body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-family: Calibri, sans-serif; "> <div>I've been also using the crescendo punchings for the past couple years and love working with them…waaaay more consistent results.</div> <div><br> </div> <div>Paul</div> <div><br> </div> <div><br> </div> <span id="OLK_SRC_BODY_SECTION"> <div style="font-family:Calibri; font-size:11pt; text-align:left; color:black; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt"> <span style="font-weight:bold">From: </span>Dale Erwin <<a href="mailto:erwinspiano@aol.com">erwinspiano@aol.com</a>><br> <span style="font-weight:bold">Reply-To: </span>"<a href="mailto:pianotech@ptg.org">pianotech@ptg.org</a>" <<a href="mailto:pianotech@ptg.org">pianotech@ptg.org</a>><br> <span style="font-weight:bold">Date: </span>Tuesday, October 9, 2012 8:51 AM<br> <span style="font-weight:bold">To: </span>"<a href="mailto:pianotech@ptg.org">pianotech@ptg.org</a>" <<a href="mailto:pianotech@ptg.org">pianotech@ptg.org</a>><br> <span style="font-weight:bold">Subject: </span>Re: [pianotech] Hammer Blow<br> </div> <div><br> </div> <div> <div><font color="navy" size="2" face="Comic Sans MS,sans-serif"><font color="#000080" face="Comic Sans MS,sans-serif" size="2">Hi Floyd</font> <div><font color="#000080" face="Comic Sans MS,sans-serif" size="2"> Dittos on Jons post.</font> <div><font color="#000080" face="Comic Sans MS,sans-serif" size="2">  </font> <div><font color="#000080" face="Comic Sans MS,sans-serif" size="2">  And just the squish factor of the avergae supply house front punching </font><font color="#000080" face="Comic Sans MS,sans-serif">changes</font><font color="#000080" face="Comic Sans MS,sans-serif" size="2"> the feel and amount of overall dip/aftertouch based on touch pressure. They squish as much as .035 compared to .015 for Jurgens crescendo punchings. If you're looking for more precision in key dip/aftertouch its only logical use the latter to reduce errors from variables</font><br> <br> <div style="color: navy; font-family: 'Comic Sans MS', sans-serif; font-size: 10pt; clear: both; "> <font size="1" color="royalblue"><b><font face="Georgia, Times New Roman, Times, Serif"><font color="black"><font color="mediumblue" face="Comic Sans MS,sans-serif">Dale Erwin R.P.T.<br> <font color="green">Erwin's Piano Restoration Inc.</font><br> </font></font></font></b></font><font color="darkgreen"><span style="font-style: italic;"><b><font size="1"><font size="1" color="black"><font color="blueviolet"><font color="black"><font color="black" face="Comic Sans MS,sans-serif">Mason & Hamlin</font><font face="Comic Sans MS,sans-serif">/Steinway/</font><font color="black" face="Comic Sans MS,sans-serif">U.S. pianos</font><font face="Comic Sans MS,sans-serif"><br> </font></font></font></font><font size="1" color="cornflowerblue" face="Comic Sans MS,sans-serif">www.Erwinspiano.com</font><font size="1"><br> </font><font size="1" color="crimson" face="Comic Sans MS,sans-serif">Phone: 209-577-8397</font><br> <font color="darkgreen"></font></font></b></span></font><tt><tt><font color="darkgreen"><br>  </font><br>   <font size="2"></font></tt></tt><br> <br> </div> <br> <br> <div style="color: black; font-family: arial, helvetica; font-size: 10pt; ">-----Original Message-----<br> From: Jon Page <<a href="mailto:jonpage@comcast.net">jonpage@comcast.net</a>><br> To: pianotech <<a href="mailto:pianotech@ptg.org">pianotech@ptg.org</a>><br> Sent: Tue, Oct 9, 2012 4:29 am<br> Subject: Re: [pianotech] Hammer Blow<br> <br> <div id="AOLMsgPart_0_4dc601ce-6494-4815-825c-66d7b36d40c3" style="margin: 0px;font-family: Tahoma, Verdana, Arial, Sans-Serif;font-size: 12px;color: #000;background-color: #fff;"> <pre style="font-size: 9pt;"><tt> >This week I'm going to see what happens to my hammer line if I set hammer blow to achieve a specified amount of aftertouch. I've set the key height, >key dip and letoff. I'll put the action in the piano, use a .045 punching with a notch cut out so I can slide it onto the front rail pin over the cloth >punching with the key installed, and set the hammer blow for each of the white keys such that a weight on the key (I forget how many grams, and I'm >not in the shop to check) brings it almost to let-off, and a slight downward tap on the key will take it through let-off. Theoretically, the straightness of >the hammer line I achieve with this procedure should allow me to evaluate how successful I was in setting even key dip and consistent aftertouch. Your hammer line will become erratic by doing this because of the slightly different Key Ratios between notes. That procedure is what you do to set an even touch with a priority given to aftertouch. But to do this, you alter the dip not the blow distance. Keys level, hammer line level, key dip slightly uneven. The pianist feels a even aftertouch and not an uneven key dip. Altering the blow on an individual basis will introduce volume discrepancies brought on by varying blow distances. Aftertouch calibration by varying dip slightly is essential to a smooth feeling action. -- Regards, Jon Page </tt></pre> </div> </div> </div> </div> </div> </font></div> </div> </span> </body> </html>