I did a very dumb thing and put my cast iron gas stove grates in the oven during a short (2 hour) self-cleaning cycle. Not only did I melt off the rubber feet but the iron is now gray and ashy looking which won't come off with a scrubby. I tried to purchase new ones but the cost is prohibitive. (I did buy replacement rubber feet which were ridiculously priced too). Has anyone had luck with painting grates with high temp paint? Any other suggestions? Thanks!
UPDATE 5/22 Before attempting to paint the grates, my husband rubbed them vigorously with fine steel wool, which removed the white ashy film. Although the tops are still a bit worn from daily use, at least the white film and greasy spots are gone and the grates look almost new. I also replaced the rubber feet. Thank you to those who responded.