It would be a lot better to do the winding in copper due to the problems
with aluminum in electrical work. As others have mentioned, aluminum will
eventually fail and you'll be left doing the job all over again.
Use either the same size copper wire or even copper sheet for the
application. I've found for electronic switching power supplies, that
copper tape in the right thickness works better than round wire (better
conduction and better fill of the winding) for higher power applications.

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Why isn't there an Ozone Hole at the NORTH Pole?