<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD><TITLE>Re: Machine Threads in Pinblock, was WD-40</TITLE> <META http-equiv=Content-Type content="text/html; charset=iso-8859-1"> <STYLE type=text/css>BLOCKQUOTE { PADDING-BOTTOM: 0px; PADDING-TOP: 0px } DL { PADDING-BOTTOM: 0px; PADDING-TOP: 0px } UL { PADDING-BOTTOM: 0px; PADDING-TOP: 0px } OL { PADDING-BOTTOM: 0px; PADDING-TOP: 0px } LI { PADDING-BOTTOM: 0px; PADDING-TOP: 0px } </STYLE> <META content="MSHTML 6.00.2900.3354" name=GENERATOR></HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial>Hi Ron!  I also use coarse thread as you do. However, I have tried tapping the maple and found that it made the hole too big - I used the proper tap for the given machine screw. I figured that the maple must have enough give in it (compared to metal), that caused the poor fit. I've gone to simply drilling a hole a little smaller than the thread and simply running a buttered (wax) machine screw into the hole (just like one does with a wood screw). I seem to get the nice tight fit that way. Do you find that you machine screw have a snug fit after tapping the hole?</FONT></DIV> <DIV><FONT face=Arial></FONT> </DIV> <DIV><FONT face=Arial>Terry Farrell</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=sec@overspianos.com.au href="mailto:sec@overspianos.com.au">Ron Overs</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A title=pianotech@ptg.org href="mailto:pianotech@ptg.org">Pianotech List</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, June 17, 2008 4:48 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Machine Threads in Pinblock, was WD-40</DIV> <DIV><BR></DIV> <DIV>Fenton,</DIV> <DIV><BR></DIV> <BLOCKQUOTE cite="" type="cite"><FONT face=Arial size=-1>. . . Would you recommend a fine or coarse thread?</FONT></BLOCKQUOTE> <DIV><FONT face=Arial size=-1><BR></FONT></DIV> <DIV><FONT face=Arial size=-1>Always course threads in wood. We use the regular tapping tools after drilling the minor diameter.</FONT></DIV> <DIV><FONT face=Arial size=-1>Ron O.</FONT></DIV><X-SIGSEP><PRE>-- </PRE></X-SIGSEP> <DIV><FONT face="Times New Roman" color=#0000ff size=+1><B>OVERS PIANOS - SYDNEY</B></FONT></DIV> <DIV><FONT color=#000000><I>   </I></FONT><FONT color=#0000ff><I>Grand Piano Manufacturers</I></FONT><FONT color=#000000><BR>_______________________</FONT></DIV> <DIV><FONT color=#000000 size=-2><BR></FONT><FONT color=#000000>Web <A href="http://overspianos.com.au">http://overspianos.com.au</A></FONT></DIV> <DIV><FONT color=#000000><A href="mailto:ron@overspianos.com.au">mailto:ron@overspianos.com.au</A><BR>_______________________</FONT></DIV></BLOCKQUOTE></BODY></HTML>