<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; = charset=iso-8859-1"> <META content="MSHTML 6.00.2600.0" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT size=2>One problem I see with this method is that you need = access to the bridge to cut the bearing notches.  Remember, at this point you = are dealing with a bridge that is not yet planed down to it's final = height.  You prestress the board, cut your notches in a few key areas, remove = everything and plane down the bridge, mark, drill, notch, etc... On a new = board some do this with a dry fit, before the glue in the board itself.  = That way the planing, drilling, pinning and notching can be done outside the = piano where there is more comfortable access.</FONT></DIV> <DIV><FONT size=2></FONT> </DIV> <DIV><FONT size=2>David Love</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=mfarrel2@tampabay.rr.com href="mailto:mfarrel2@tampabay.rr.com">Farrell</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A = title=pianotech@ptg.org href="mailto:pianotech@ptg.org">pianotech@ptg.org</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> January 20, 2002 6:34 = AM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Soundboard Pre-Stressing/Downbearing, was: Baldwin accu-hitch pins</DIV> <DIV><BR></DIV> <DIV><FONT size=2></FONT> </DIV> <DIV>What about a rig similar to a pneumatic rib clamp. Just use the = half with the fire hose. Clamp it to the rim above the bridge, inflate, and = there you go with measurable pressure applied all along the long bridge </DIV></BLOCKQUOTE></BODY></HTML>