Over the weekend I decided to continue with the same mast but to install it upside down.
First I marked the kink in the mast and reinstalled the fittings upside down with the kink facing aft.
I looked carefully at the mast partner and carefully removed the cracked part from the port-side cheek.
It appeared that the oregon pine lamination had sheared off just outside the glue line.
This meant that the wood was the weakest part, not the glue itself.
I used PolyPox 700 glue to glue both parts together and used an oversized screw as an extra reinforcement.
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