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I'm putting together a home foundry following some plans, but they haven't discussed the subject of high heat paint to protect the steel of the body and I was hoping someone here would have some insight. I've roughed out the body of my foundry and coated the outside with high heat paint (see attached) to prevent the steel from oxidizing; the paint is rated up to 2000F and my thinking was that if the exterior gets to the point of 2000F then I have bigger problems than paint vaporizing. I am tempted, however, to paint the inside wall as well; the lid and the bottom will be protected from oxidati