anybody know how crucial the temp is, i understand you have to get it at least to a certain temp, but can it be hotter, i dont have an oven like that i can use, but i do have something to make a big oven out of, but, its using a wood stove, so there is no way to really moniter the temp to 400 exactly. I feel confident i could get it that hot, but it very well could get hotter