So the weather has improved slightly and I'm eager to get my oven built. My plan is to do markets, I want to be able to load the oven onto the back of a trailer. I would like advice on what to do next!!! i am unsure about insulation because i dont know if it is ok to use fiberclass/rockwool also should i use re-bar cast in the dome or will this lead to cracks when the iron expands??