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Amount of Clay needed? - Forno Bravo Forum: The Wood-Fired Oven Community

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  • Amount of Clay needed?

    Hi

    I'm looking for some advice on the amount of clay i will need to build a 34 inch Diameter oven the clay soil i have is about 70% clay. I plant to build the internal layer about 3 inches thick and the external layer at 2 inches. Any advice will be greatly appreciated.

    Thanks



  • #2
    Sounds like you are wanting to build a cob oven in which case you need a mix of 2 parts sand to one part water by volume. The formula for volume of a sphere is 4/3 x 3.142 x r x r x r. Donít forget to halve it because itís a hemisphere.
    Kindled with zeal and fired with passion.

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