I have a 35 year old cast iron dutch oven (Club colorcast made in Waterford, Ireland) that is enameled on the outside and has a teflon coating inside. Unfortunately, I left a batch of beans on the stove top too long. They ran out of liquid, burned and stuck to the bottom and sides. Hunks of tefton came off with the beans leaving dozens of "pock" marks where the cast iron is exposed and rusting.
I sanded off the rough edges of teflon as best I can but am a little afraid to use the pot in case more flakes off. Plus I haven't been successful in seasoning the exposed cast iron. I have thought about finding someone to sandblast the inside. Does this sound logical? Safe? Reasonable? Any suggestions? I hate the thought of abandoning this wonderful pot. DMc