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clay with grog? - Forno Bravo Forum: The Wood-Fired Oven Community

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New Forno Bravo Forum Feature

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.
- Another thread will be posted for the live AMA. Registered users who are logged in during the live session can interact with the host by asking questions and receiving responses.
- The live thread will remain in the AMA forum to view after the session.

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 with grog?

    how well will this stuff work for building the dome instead of bricks?
    anyone gone this route?

    Standard Clay Catalog


  • #2
    Re: clay with grog?

    Potters clays are really specialized. They are also really expensive, compared to bricks. Grog is crushed, fired, clay, and it's used in a thicker clay body to prevent cracking. Cracking is a bad problem when making thick slab based pottery.

    In any event, potters clays are classified by the cone, or temperature, they are fired to. Since a mud oven will never get hot enough to vitrify, you're probably just as well off with river mud.

    What's your goal in building a clay oven?
    My geodesic oven project: part 1, part 2

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    • #3
      Re: clay with grog?

      Grog can also be sand (albeit crushed) - add straw and you now have either adobe or cob. The answer to has anyone done it is basically yes since cob/adobe/earth ovens are all made of a clay/sand mix. As for commercial clay, dmun is right. It's much more expensive.

      I've never read of anyone bothering with a true clay body (mixture of clay types to provide the working clay) for any type of earthen oven. In cob, the ratio of sand to clay is at issue, not the clay body.

      As for how well the ovens perform, they do quite well.
      Last edited by Archena; 08-29-2009, 07:36 PM.
      "He is no fool who gives what he cannot keep to gain what he cannot lose." - Jim Elliot

      "Success isn't permanent and failure isn't fatal." -Mike Ditka
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