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Clay sand ratio for cob oven - Forno Bravo Forum: The Wood-Fired Oven Community



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Clay sand ratio for cob oven

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  • Clay sand ratio for cob oven

    Hi all
    I can't seem to find a sand to clay ration for a cob oven.

    I have some clay recommended for WFO.s from a local clay producer.

    I have access to sharp masons sand. Planning a 40 inch wide dome oven.

    I poured the supporting base yesterday.

    It will have to sit for a while as it cool outside.

    Fire brick is bought for the floor, and flue liner.

    Thanks all

  • #2
    Re: Clay sand ratio for cob oven

    Don't forget to insulate between the supporting slab and the oven floor.
    I think the sand, clay proportion is about 50/50 and usually chopped straw is added to the mix to add reinforcing.
    Kindled with zeal and fired with passion.


    • #3
      Re: Clay sand ratio for cob oven

      Perlite is in place.