Got this as a gift second handed and would like to sharpen it and make it usable again. The serrated top part started to just break off, so I am cautious about potential metal parts in my food. Any tips welcome, thanks.
An aggressive reprofile would save it. But I would be worried more bits breaking off, and not just for the rusting, but it could chip or potentially really embed itself into a molar, or it could lacerate your gi lining. I would turn it into more of a show piece if you really want to save it. But I personally wouldn't chance it with food ever again.