Reply by Cosmicsniper

Mike said, “NEVER: Spray directly on any iron surface to be cleaned. I did and now have a small area where I have permanent “splash” marks from the spray.”
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Yeah, this is why I said that its probably better to skip the sanding step if not completely necessary. You end up making a bigger scratchy spot rather than a small ding. It just makes matters worse. And you have to be careful what chemical you use, if any, because of discoloring the top.

-- jay, www.allaboutastro.com