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+1 nichrome. Real easy. A few rounds in parallel and series as per the calcs mentioned. Cover in the thinnest heat shrink to stop parts shorting out. Lay on gaffatape. Doesn't solder well so twist around connecting wire and solder to hold together. Then put heat.shrink over that also to hold it together. If you want to improve heat conduction to the scope you can put adhesive aluminium tape on one side. Can get all the stuff from jay car and that large home improvements chain.
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