Just read the article about cast iron cookware. I have been using it for 45 years on a kitchen wood cook stove. Do not use olive oil to treat the pan. It contains an acid. I taught high school Industrial Arts , changing over to Technology in 1985. In woodworking, I taught my students to use their finger tips to inspect the smoothness of their work. They can "see" better that your eyes. The same technique works on cast iron. Gently rub the surface with your finger tips.. You can feel the spots that need smoothing.
John
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