<html> <head> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"> <meta name=Generator content="Microsoft Word 10 (filtered)"> <style>  </style> </head> <body bgcolor=white lang=EN-US link=blue vlink=blue> <div class=Section1> Grinding the v-bar runs a risk of grinding through the hardened portion that is crucial for clean termination.  Wouldn’t recommend that.  I don’t see any problem with changing hammer bore for each section.  It’s fairly common for pianos to vary from the bottom of the tenor to the top of the treble (not to mention bass and treble differences).  Often it’s a gradual change (as in Steinway), but sometimes not.  I can’t imagine we are talking about much difference hear.  There is a limit to how much you can effectively grind off an agraffe to effect a change.  I don’t see any real benefit anyway.  The simplest solution is often the best.       <div> David Love davidlovepianos@comcast.net www.davidlovepianos.com </div> -----Original Message----- From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf Of Frank Emerson Sent: Thursday, May 24, 2007 9:44 AM To: Pianotech List Subject: RE: Agraffe Counterbore Tool   <div> <div> I agree with Terry that it would be preferable to keep the hammer bore as consistent as possible.  In manufacturing, the counterboring is done on CNC machines.  It would be very difficult to keep the counterboring consistent, resulting in the strings being in a consistent plane, even if you do get it closer to the treble plane.  Would it be easier, and more even to grind the v-bar to raise the treble, rather than lower the tenor?  Is there room to lower the plate a bit to compensate? </div> <div>   </div> <div> <div> Frank Emerson </div> <div>   </div> </div> </div> <div>   </div> <blockquote style='border:none;border-left:solid black 1.5pt;padding:0in 0in 0in 4.0pt; margin-left:3.75pt;margin-top:5.0pt;margin-bottom:5.0pt'> <div> ----- Original Message ----- </div> <div style='font-color:black'> From: <a href="mailto:davidlovepianos@comcast.net" title="davidlovepianos@comcast.net">David Love</a> </div> <div> To: <a href="mailto:pianotech@ptg.org" title="pianotech@ptg.org">Pianotech List</a> </div> <div> Sent: 5/24/2007 10:31:00 AM </div> <div> Subject: RE: Agraffe Counterbore Tool </div> <div>   </div> Pretty hard to make any significant difference without major grinding of the agraffes.  I’d simply adjust the hammer bore assuming that the bearing is not at issue.   <div> David Love davidlovepianos@comcast.net www.davidlovepianos.com </div> -----Original Message----- From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf Of Farrell Sent: Thursday, May 24, 2007 6:59 AM To: Pianotech List Subject: Re: Agraffe Counterbore Tool   <div> To get my tenor string plane down to the desired elevation (that of the two top treble sections). I know I can simply adjust the hammer boring, but I wanted to get all the long bridge sections (plain wire) as close to one plane as I reasonably could. </div> <div>   </div> <div> Terry Farrell </div> <blockquote style='border:none;border-left:solid black 1.5pt;padding:0in 0in 0in 4.0pt; margin-left:3.75pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'> <div> ----- Original Message ----- </div> <div style='font-color:black'> From: <a href="mailto:davidlovepianos@comcast.net" title="davidlovepianos@comcast.net">David Love</a> </div> <div> To: <a href="mailto:pianotech@ptg.org" title="pianotech@ptg.org">'Pianotech List'</a> </div> <div> Sent: Thursday, May 24, 2007 9:26 AM </div> <div> Subject: RE: Agraffe Counterbore Tool </div> <div>   </div> What’s the situation that you need to grind down the agraffes?   <div> David Love <a href="mailto:davidlovepianos@comcast.net">davidlovepianos@comcast.net</a> <a href="http://www.davidlovepianos.com">www.davidlovepianos.com</a> </div> <div> have been happy with it. </div> <div>   </div> <div> But my current project needs to have all its new agraffes ground down a fair bit. I do not relish grinding all these agraffes by hand. I would love to put this thing in some slow turning machine and grind my agraffes that way. But what machine? I wish I could chuck it into my 1/2" drill press. This thing just reeks of some special purpose to the taper, etc. - what the heck is it supposed to mount in? </div> <div>   </div> <div> Thanks for any ideas/input. </div> <div>   </div> <div> Terry Farrell </div> <div>   </div> <div> Terry Farrell Farrell Piano </div> <div>   </div> <div> <a href="http://www.farrellpiano.com">www.farrellpiano.com</a> <a href="mailto:terry@farrellpiano.com">terry@farrellpiano.com</a> </div> </blockquote> </blockquote> </div> </body> </html>