First take a file or cut a few of the windings. If its white/silver color inside its aluminum windings. these go in a dirty/irony aluminum pile. The ones that show copper on the inside you put in a copper motor pile. Then you have to decide is it worth your time to cut out the copper windings and only you can determine that. Personal I don't cut out the aluminum ones I take them in like that but do cut 50 to 75% of my copper ones. Its up to you. As for shock as long as the wires are cut and no AC or capacitors are hooked up it wont bite you.
Good luck
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