<HTML style="FONT-FAMILY: MS Sans Serif; FONT-SIZE: x-small"><HEAD><TITLE></TITLE> <META content="text/html; charset=ISO-8859-1" http-equiv=Content-Type> <META name=GENERATOR content="MSHTML 8.00.6001.19088"></HEAD> <BODY bgColor=#ffffff text=#000000> <DIV> <DIV>I just forwarded this to John Rhodes. He probably knows. (At least I hope so.<G>) I'm suspecting that raising the temp. to the proper annealing range for brass would weaken the screws made of steel. And, for that matter some drop screws are made of brass and need to be hard. Is a puzzlement.</DIV> <DIV>Joe</DIV> <DIV> </DIV> <DIV></DIV></DIV> <DIV> </DIV> <BLOCKQUOTE style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px"> <DIV style="FONT: 10pt Arial">----- Original Message ----- </DIV> <DIV style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B> <A title=mike.spalding1@frontier.com href="mailto:mike.spalding1@frontier.com">Mike Spalding</A> </DIV> <DIV style="FONT: 10pt arial"><B>To: </B><A title=joegarrett@earthlink.net href="mailto:joegarrett@earthlink.net">joegarrett@earthlink.net</A>;<A title=pianotech@ptg.org href="mailto:pianotech@ptg.org">pianotech@ptg.org</A></DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> 7/26/2011 7:33:28 AM </DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [pianotech] Chickering Grand Hammer Flanges?</DIV> <DIV><BR></DIV><FONT size=2>Joe,<BR><BR>If you decide to go ahead with the annealing, I would strongly recommend removing the screws first.  Steel and brass react very differently to heat treating.  Whatever works for brass will do something different, and probably unwanted, to the steel screws.  Sorry I don't have enough knowledge/experience to predict exactly what.. hence my caution.<BR><BR>Mike <BR><BR>On 7/26/2011 9:00 AM, Joseph Garrett wrote: <BLOCKQUOTE cite=mid:380-2201172261403562@earthlink.net type="cite"> <META name=GENERATOR content="MSHTML 8.00.6001.19088"> <DIV> <DIV><FONT size=2 face="MS Sans Serif">Tom,</FONT></DIV> <DIV><FONT size=2 face="MS Sans Serif">I guess that was part of my question, as well.<G> I'd like to retain the flanges, if possible, but there are issues. Still waiting for some of those eye opening answers.<G></FONT></DIV> <DIV><FONT size=2 face="MS Sans Serif">Joe</FONT></DIV> <DIV> </DIV></DIV> <DIV> </DIV> <BLOCKQUOTE style="BORDER-LEFT: rgb(0,0,0) 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px"> <DIV style="FONT: 10pt Arial">----- Original Message ----- </DIV> <DIV style="FONT: 10pt arial; BACKGROUND: rgb(228,228,228)"><B>From:</B> <A title=tomtuner@verizon.net href="mailto:tomtuner@verizon.net" moz-do-not-send="true">Tom Driscoll</A> </DIV> <DIV style="FONT: 10pt arial"><B>To: </B><A title=joegarrett@earthlink.net href="mailto:joegarrett@earthlink.net" moz-do-not-send="true">joegarrett@earthlink.net</A></DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> 7/26/2011 6:16:10 AM </DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [pianotech] Chickering Grand Hammer Flanges?</DIV> <DIV><BR></DIV><FONT size=2> <DIV style="FONT-FAMILY: Arial; COLOR: rgb(0,0,0); FONT-SIZE: 12px"> <DIV>Joe,<BR>   I don't know the answer, but I do have a related question about  frozen  drop screws on these flanges. I've had numerous experiences  where they just break off .<BR>  So my somewhat related query is will heat break them loose ?<BR>   Awaiting our crews response to both questions,<BR> Best,<BR> Tom Driscoll <BR></DIV> <DIV> </DIV> <DIV> </DIV><SPAN style="FONT-FAMILY: arial; COLOR: rgb(0,0,0); FONT-SIZE: 12px">On 07/26/11, <SPAN>Joseph Garrett<A class=moz-txt-link-rfc2396E href="mailto:joegarrett@earthlink.net"><joegarrett@earthlink.net></A></SPAN> wrote:</SPAN> <DIV style="FONT-FAMILY: arial; COLOR: rgb(0,0,0); FONT-SIZE: 12px">Anyone have an idea the difference of expansion rates of Steel and Brass.<BR>I'm into a Chickering Grand and am planning on trying to anneal them<BR>puppies. Reason for asking is wether to remove the screws and drop screws<BR>or leave them in during the annealing process. Any one have some thoughts?<BR>Regards,<BR>Joe<BR><BR><BR>Joe Garrett, R.P.T.<BR>Captain of the Tool Police<BR>Squares R I<BR><BR></DIV></DIV></FONT></BLOCKQUOTE></BLOCKQUOTE><BR></FONT></BLOCKQUOTE></BODY></HTML>