This is an idea to make a final attempt to repair a neck break that has failed several times. This is a pretty "hard core" repair and if it fails again the neck will next stop at the nearest trash can for incineration.
The fret board was taken off and the truss rod removed in this thread.
The diagram shows the plan. Basically the empty truss rod channel will be partially filled with a 0.2X0.5X10 (inches) carbon fiber bar which will be epoxied in to the bottom of the channel using StewMac clear, slow setting epoxy.
The bar will extend from the dove tail joint, run under the nut and be embedded into the head stock up to near the end of the truss rod pocket. Thus the CF bar will completely cross the the neck break line.
To provide additional support on the top or the head stock the truss rod pocket will be filled with epoxy and a truss rod cover made of aluminum flat stock -- which will run all the way to the nut (and butt up against it) will be epoxied into place. Thus the TRC becomes a structural component of the neck repair. Obviously that TRC will never be opened again.
The CF bar will be topped with a maple bar that glued in place with Titebond and will be leveled so that the fret board can be re glued to the neck.
Clearly this is either the last neck repair for this mandolin or it is the last time this neck will be in place on the mando!
Any other thoughts on this fix?
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