I inherited a rusty cast iron grill pan from a friend. I wasn't able to scrub off the rust, so I asked my mom to stick it in her oven next time she ran the self-clean cycle (I have an ancient oven without self-clean). She did, but now it'll be two weeks before I can get it and she says that it's covered with rusty dust. What's the next step? If the next step in cleaning is complicated, is there anything she can easily do to keep the pan okay until I can get to it? Or would it be best to just run it through again right before I take it home?
I've read most of the zillions of cast iron threads, but I didn't find any reference to this dustiness that happens after running it through the oven.
Also, is there any way to get the same effect in an oven that doesn't have a self clean cycle? I have one of those drawer broilers, if I put it in there for a bit would that have worked?
Thanks very much!