I'm interested in fabricating a round igloo 42" oven. Does anyone have any suggestion on a recomended diameter for the foundation? I'm also open to ideas on how to frame it. I saw one that used the black garden edging to make it round. I suppose I could frame a square and place that flexible edging with some stakes to secure it on the inside. I like simeon's round base but can't find any details.
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Round foundation help