<HTML>In a message dated 9/29/2002 9:06:55 AM Pacific Daylight Time, A440A@aol.com writes: <BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">Subj:Re: Hang'n dem Hammers Date:9/29/2002 9:06:55 AM Pacific Daylight Time From:<A HREF="mailto:A440A@aol.com">A440A@aol.com</A> Reply-to:<A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A> To:<A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A> Sent from the Internet             Ed </BLOCKQUOTE>                     I agree and am on the same page. On the one hand I'm a whatever works for you kind of approach but doing it the other way, for me,presents more opportunity for error & frustration  due to some of the things you mentioned Ed and the ineffiency of not being able to seperate job functions.Ie traveling all shanks at once using a square, determing strike and bore  angles and hanging in one operation.  I really am trying to make money doing it.        The curved hammer line is so common on stwys in my shop I can all most call it before hanging. Dry fit and listen to the tone especially from G5 thru E-6 with C-6 usually being the not pulled the furthest forward ,often 3 mm. Una corda sound is improved as isoverall power and sustain.      As an aside I know of no other factor that creatres more difficulty in the hanging process than that of too tight a bore fit to the shank, well other than hammers bore incorrectly.    My two cents>>>>Dale Erwin <BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px"> RICHARD WRITES: >But I do get a real quick dead on line. Guess I am >looking for a good reason to learn a new approach :) > Using the old hammers as guides in an "every other one" fashion brings all variables of previous filing or regluing into your equation.  The hammers may not be in an exactly even line.  This may cause problems if you try to shape the tails en masse, since some may be at greater or lesser amounts of inclination.     I set hammer bore and hanging angles on the end hammers of the sections. Then, after I travel all shanks, hang the hammers with a pair of straight edges held in a jig, one, a 90 degree bracket locating the bottom and front of the tails and another that the distal shoulder rests against.  Things go pretty fast, once the end hammers are correct.       In the C5-C7 area, it is not uncommon for the hammer-line to be curved between the end hammers on a per section basis. This comes from hanging trial hammers in the middle of the section and moving the action in and out to find the best contact point on the string.  I don't think the original manufacturers always took the time to do this, relying instead on straight hammer lines being close enough.  Regards, Ed Foote RPT  _______________________________________________</BLOCKQUOTE> </HTML>