Not exactly a field bodge, possibly not even a bodge:
If there's enough length, find a pristine bit of cable and flood it with solder. I use a gas torch and silver solder - some will say this is excessive, but cable coatings often don't play nicely with soft solder.
Cut through the centre of the soldered section with a Dremel cutting disc.
Use a grinding wheel to round off the cut edges for easier insertion.
Not exactly a field bodge, possibly not even a bodge:
If there's enough length, find a pristine bit of cable and flood it with solder. I use a gas torch and silver solder - some will say this is excessive, but cable coatings often don't play nicely with soft solder.
Cut through the centre of the soldered section with a Dremel cutting disc.
Use a grinding wheel to round off the cut edges for easier insertion.