[pianotech] Treble bridge repair

daniel carlton carltonpiano at sbcglobal.net
Mon Aug 23 10:26:14 MDT 2010


Joe Goss suggested:
"5 minute epoxy"

Joe,
NOT recommended. 5 minute epoxies do not have the needed strength.  Strength is 
sacrificed for speed so to speak. DAMHIK! It's best to use something like Devcon 
2-ton epoxy. Either clear or steel versions are o.k. J-B Weld is a version of 
the "steel" type epoxies. Steel types are used to fill large cracks that have to 
be "V'd" out. That method does take a bit longer and a different technique, but 
all doable within the "four hour" time frame. The time needed for the epoxy to 
set up, is NOT part of the time you charge the client! (unless you want to spend 
the night and just sit there and watch the darned stuff set!<G>) Hairline 
cracks, you need not pull the pins. Simply use a large soldering iron and heat 
the pin and apply a drop with a toothpick to the base of the pin. The heat will 
"suck" the epoxy right into the hole/crack. Some of the more modern types prefer 
to do that trick with CA. NOT recommended either. I some times wonder why most 
cannot figure out the process from the Repair Labor Guide. OR...just call me and 
I'll explain it.

I've only ever heard of pulling the pins. Never heard of using the soldering 
iron. I'll try it. 

I can absolutely do this in four hours, for sure. I had in mind an extra trip 
(for some reason, in writing the estimate, I was thinking in terms of time 
instead a flat charge for a trip; that's why I asked about the time); I don't 
really have a proper workspace at the moment, and I do it onsite, and let the 
epoxy cure overnight.

daniel
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