Originally posted by zdziandy
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IT = "Indispensible Tool". Do a search for it, but basically it is an arm mounted in the center of the dome that lets you check the bricks for angle and distance from center as you install them. The catch is, it only works well if you are building a perfect half sphere
Vault - I would call an 18" dome height in a 42" oven a low dome oven (versus a sphere as referred to above, which would have a 21" dome height). You'll definitely need some sort of form for that
Getting the form out of the oven - yes, as long as your door about the same width as your form is tall - which it generally would be. But you can always burn it if you have a problem!
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