<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=US-ASCII"> <META content="MSHTML 6.00.6000.16441" name=GENERATOR></HEAD> <BODY id=role_body style="FONT-SIZE: 10pt; COLOR: #000000; FONT-FAMILY: Arial" bottomMargin=7 leftMargin=7 topMargin=7 rightMargin=7><FONT id=role_document face=Arial color=#000000 size=2> <DIV> <DIV><STRONG><EM>   Hi ROn</EM></STRONG></DIV> <DIV><STRONG><EM>  What's the decimal equivalent of 6.8mm.  I find that a letter f .257 is a bit too tight for the block you are describing.  .261 seems better in CA climate. I hate tight tuning blocks. A tight block in a piano makes for it to be more likely to be more out of tune more of it's life. JMHO </EM></STRONG></DIV> <DIV><STRONG><EM>  You Know?</EM></STRONG></DIV> <DIV><STRONG><EM>  Dale:</EM></STRONG></DIV> <BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><FONT style="BACKGROUND-COLOR: transparent" face=Arial color=#000000 size=2>> All the 1/4" holes first, then all the 6.8mm. Just one bit change between <BR>> passes. It has always been my impression that it would be difficult not to <BR>> center the second pass. I drill in the piano, with my hovercraft drill <BR>> press setup, and the second pass seems to center pretty much automatically <BR>> with a regular jobber bit. Maybe there's a potential problem I'm not aware <BR>> of here. What sort of drilling rig and procedure do you use?<BR>> Ron N<BR>> </FONT></BLOCKQUOTE></DIV> <DIV></DIV> <DIV> </DIV></FONT><BR><BR><BR><DIV><FONT style="color: black; font: normal 10pt ARIAL, SAN-SERIF;"><HR style="MARGIN-TOP: 10px">See what's free at <A title="http://www.aol.com?ncid=AOLAOF00020000000503" href="http://www.aol.com?ncid=AOLAOF00020000000503" target="_blank">AOL.com</A>. </FONT></DIV></BODY></HTML>