The firebox in my Egg now has multiple cracks in it and is not long for this world. (Yes, it will get me through Thanksgiving. Whew!) Because of my work, I know some people who run a machine shop that makes custom pieces for oilfield service companies. They will make me a firebox out of stainless steel if I want one but I don't know if there is any reason NOT to do this instead of buying a replacement from my local Egg store.