split bridge

[David Love]

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With epoxy you don't really want to clamp things down to the glue being
a few microns thick.  With other kinds of glue you do, but not epoxy.
Epoxy does better with some thickness.  When epoxying a bridge back
together I only clamp enough to get the shape of things right.  If I can
just squeeze things back together with my fingers and they don't want to
drift apart after I let go, I don't worry about it.  Sounds like it all
worked out.
 
David Love
davidlovepianos@comcast.net 
-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On
Behalf Of Ron & Lorene Shiflet
Sent: Saturday, May 21, 2005 6:33 PM
To: Piano-Tech
Subject: split bridge
 
List, 
        I got the piano finished.  Sounds great.  The slowest curing
epoxy In could get was a 45 minute set.  I mixed it well and goobed the
bridge.  As I tried to screw down the bridge top, It kept splitting.
Too dry out here right now.  Then the glue started setting up in 20
minutes instead of 45 minutes.  We were desperate.  The piano was on a
tilt truck.  
    We ran a pipe clamp from side to side.  We stacked 2x4 blocks on the
bridge to build it up.  Then we used a grand piano pinblock support to
crank pressure from the pipe clamp to the 2x4's and the bridge.  We did
mange to get enough pressure to hold it.  It dried in place.  We never
did use screws or dowels.  We put the strings back and pulled them up.
It tunes quite well and the tone is great.
 
Ron
 
 

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