You don't have to cure powder paint to use. It will chip off a LOT easier but it is not mandatory to do it. You can hold them over coals or open flame for 20-30 minutes to cure them trying to keep them between 250 and 350 F. A metal rack suspended over coals that are giving off at least 250 and less than 350 will cure them eventualy.

I have cured them over a BBQ pit before with mixed results but they cured as long as I didn't melt the lead off the hook. I have also cured brass spinner components that way without much problem.