I restarted two cast iron skillets! My mom found these at garage sales. They had been neglected and then left outside for a few days and were in bad shape as you can see. I don’t have a self-cleaning oven, so I used a stainless steel scrubber, coarse salt,
water, a couple of cautious splashes of vinegar, sand paper, and a lot of elbow grease to scrub them down to a rust-free, fairly smooth surface. I then rinsed, dried, and rubbed them with coconut oil. I put them (one at a time) in 450f oven until I noticed they were smoking, let them cool somewhat, wiped them out while the oil was still a bit hot, and melted in some fresh. The next morning, they passed the test! No-stick egg and a sausage cooked, with only a paper towel wiping to clean up. I expect with use and care they’ll be good skillets.
"[6] Let the people, O God, confess to Thee: let all the people give praise to Thee: [7] The earth hath yielded her fruit. May God, our God bless us, [8] May God bless us: and all the ends of the earth fear Him." (Psalms 66/67)