<!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 6.00.2900.2668" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY>
<DIV><FONT face=Arial size=2>Here are a few pics of a solution to =
installing a
new bolt and clamping.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>First, draw the back together (as much =
as possible)
with lots of good strong clamps. I bent several of the pipes in the =
picture
below (not proud of that, but just to point out that you often need to =
really
crank down on clamps to draw a piano back together). I also let string =
tension
down prior to clamping.</FONT></DIV>
<DIV><IMG alt="" hspace=0
src="cid:013301c57722$7129ded0$0201a8c0@youro0kwkw9jwc" =
align=baseline
border=0></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Clamp at the back posts, not on =
the filler
blocks. Use two clamps if more power is needed. Use clamps to draw the =
back
together. Bolts to hold it there. I use epoxy in the gap - but like Ron =
N. said,
I'm not sure how much that will really do because you are not bonding =
two
properly prepared wooden surfaces together - you are bonding to old glue =
that
has already demonstrated its ability to fail.</FONT></DIV>
<DIV><IMG alt="" hspace=0
src="cid:013401c57722$712c4fd0$0201a8c0@youro0kwkw9jwc" =
align=baseline
border=0></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV>
<DIV><FONT face=Arial size=2>I removed two interferring tuning pins =
and drilled
and bolted (after clamping, of course).</FONT></DIV>
<DIV><FONT face=Arial size=2><IMG alt="" hspace=0
src="cid:013501c57722$712c4fd0$0201a8c0@youro0kwkw9jwc" =
align=baseline
border=0></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Replaced tuning pins - nice clean
installation.</FONT></DIV>
<DIV><IMG alt="" hspace=0
src="cid:013601c57722$712c4fd0$0201a8c0@youro0kwkw9jwc" =
align=baseline
border=0></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Some folks have stated that there is no =
need to let
string tension down prior to clamping and some say you must. I say its =
better to
and largely depends on the size of the separation. I did a Baldwin =
Hamilton that
had a 3/4-inch separation. I let string tension down three semi-tones. =
After
clamping, epoxying, and bolting, the darn thing was nearly up to A440. =
No doubt
a separation that you can just barely sneak a business card into could =
be
handled without dropping pitch (especially if the crack is down at the =
bass
end). I don't drop string tension to make it easier to pull the back =
together,
but rather so I don't pop all the strings!</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Terry =
Farrell</FONT></DIV></DIV></BODY></HTML>