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There is no reason to repeat the thermal cycling, just austenitize and quench and repeat your tempering cycle at say 150C-300F this time. If it's too hard, not bronze, then up a few degrees for an...

I think you found something important about toaster ovens. They don't have the finest control around a set point.

I see some of the right sort of bronzish in there. Other color oxides appear...