<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=iso-8859-1"> <META content="MSHTML 6.00.6000.16448" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial size=2>Chris-</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>I must have missed some posts on this thread.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Could you give a clear description of the cross section of the shank when you are finished rehaping?</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Is it convex  ()  </FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>or concave )(  </FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Thanks!</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Ed Sutton</FONT></DIV> <BLOCKQUOTE dir=ltr style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt arial">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> <A title=solliday@ptd.net href="mailto:solliday@ptd.net">Chris Solliday</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A title=caut@ptg.org href="mailto:caut@ptg.org">caut@ptg.org</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, May 19, 2007 12:53 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> [CAUT] killer shanks</DIV> <DIV><BR></DIV> <DIV><FONT face=Arial size=2>Bob Hull</FONT></DIV> <DIV><FONT face=Arial size=2>Yes I taper/channel the whole set and sort by weight. I am told that the stiffening is akin to I-beam construction but I am not an engineer so consider that hearsay. Speaking of hearing just put a tapered shank in the middle of the bass section amongst the hex and see if you hear a difference. I do. I get a stronger 3rd partial most of the time and I like that. I think tha doing this clears up the tone of the whole piano. You should experiment for yourself. A factory channeled complete set is available from Abel through Wally Brooks who was the first person to point out the attributes of doing this for me.  As I recall they are only Hamburg specs but I have used them with success. Wally will also channel other sets for you for a small fee. I am told that other sets are available from Pianotek and others but I have not gotten any so consider that a rumor. Usually I channel my own with a router gig and/or free hand on a belt sander. It is surprising how quickly and uniformly they can be turned out which is why i often don't bother with the router set up. I sort by weight to help smooth the Strikeweight taper ala Stanwood. I hope we can get some slow mo video on the difference someday.</FONT></DIV> <DIV><FONT face=Arial size=2>Chris Solliday</FONT></DIV></BLOCKQUOTE></BODY></HTML>