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

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Forno Bravo Forum Community,

You will notice a new forum at the top of the main page called, "Ask Me Anything". This forum will be used for live one hour "Ask Me Anything" (AMA) sessions hosted by people who are knowledgeable in different areas pertaining to wood fired ovens. How it works:
- Each AMA will have a "sticky" thread where the community can post questions they would like answered during the live session. This will allow everyone to participate even if you can't be online for the live session. These questions will not be answered by the host until the live AMA; if you need an answer quickly, you should post it in the appropriate Forum area for the community to respond.
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To kick off our AMA feature, we have invited author, chef and master bread maker and host of Pizza Quest, Peter Reinhart, to be our first host! Peter will be in the Forum on Monday, February 15th, from 7:00 - 8:00 pm EST. If you are unable to be online during the live session, you can post your questions in the sticky post. Peter will answer those questions during the live session on February 15th. You can view Peter's answers to your questions as well as what happened during the live session in the session thread.

We hope you enjoy this new feature! Please let us know if there is a topic that you'd like to have as an AMA and we'll look for a host!

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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.

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    • #3
      Re: Clay sand ratio for cob oven

      Perlite is in place.

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