Rich,
A few questions: 1) How would you describe or define the material used for the insulation? 2) Is the wire copper, steel, bronze or something else? 3) Is the wire a single strand or stranded? 4) Are you dealing with a single wire or something bundled or ganged in a flat-pack? 5) Do you intend to remove it at the end or expose a short (or longer) length in the middle?
There are a couple of techniques, but only four basic means: cutting it with a blade (I'd suggest length-wise if it's single-strand: lay it in a pre-cut slot so that it doesn't roll); softening it and then pulling it off with something not so soft (pinched fingernails?); burning it off; or dissolving it with something that doesn't also attack the wire.
Hopefully it's not a discrete length already attached to something and you've got a little stock to practice on. Experimentation will be your friend on this one.
Good luck - and share your results, please.
John
.....without destroying the wire?
Rich
Alton Junction