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High duty fire brick - Forno Bravo Forum: The Wood-Fired Oven Community

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I'm Peter Reinhart! Ask Me Anything! Monday, February 15, 2016 7:00-8:00 pm EST

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.

Ask Me Anything New Forum Feature

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.

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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High duty fire brick

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  • High duty fire brick

    I live in Panama and can only locate high duty fire brick - can I use them? I've read the Pompeii Oven guide and it says that high duty fire brick get too hot to cook food. The bricks have Jet dp stamped on them and they look brand new. I sure hope I can use them because I now have 300 of them sitting in my carport. Your assistance is much appreciated.

  • #2
    Re: High duty fire brick

    Wouldnt the bricks only get as hot as the fire will allow.
    The English language was invented by people who couldnt spell.

    My Build.

    Books.

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    • #3
      Re: High duty fire brick

      The denser the brick the more heat it can store, but they're also more expensive and harder to cut.
      Kindled with zeal and fired with passion.

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      • #4
        Re: High duty fire brick

        But how can they get hotter than the fire will allow?
        Surely you would just build a smaller fire, or dont fire for as long.
        The English language was invented by people who couldnt spell.

        My Build.

        Books.

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        • #5
          Re: High duty fire brick

          exactly. Or let the oven cool down.
          Kindled with zeal and fired with passion.

          Comment


          • #6
            Re: High duty fire brick

            All ovens are totally unique and have different characteristics compared to other ovens and behave quite differently, you have to adjust your cooking techniques to suit your own oven.
            Less firing.
            Smaller fire.
            Let it cool down longer.

            It took me ages to get the hang of how my oven cooked and behaved, but it was worth it, we now have regular pizza parties.
            The English language was invented by people who couldnt spell.

            My Build.

            Books.

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            • #7
              Re: High duty fire brick

              Sharon your bricks should be fine. If you want to know more this topic has been discussed to exhaustion on other threads. Try using the search function to know more.
              Kindled with zeal and fired with passion.

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              • #8
                Re: High duty fire brick

                I appreciate the prompt feedback - it's a beautiful day in Panama so I'll go outside and dream about building my oven.

                Comment


                • #9
                  Re: High duty fire brick

                  It's like having additional thermal mass, without the additional bulk. Yeah, I'd use them.
                  George

                  My 34" WFO build

                  Weber 22-OTG / Ugly Drum Smoker / 34" WFO

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                  • #10
                    Re: High duty fire brick

                    The way it was explained to me was that brick composition and densities vary depending on the desired operating temperature. High duty firebricks are designed to operate at a higher temp than low duty firebricks. I do not know if a higher operating temperature translates to a longer 'service' time, especially if the bricks are only heated to a desired pizza-cooking temp. If you have access to an IF thermometer, maybe you can fire your oven bricks to approx 800F and keep your fire just big enough to maintain that 800F.

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                    • #11
                      Re: High duty fire brick

                      They'll be fine, a little harder to cut, but you won't notice any practical difference in cooking.
                      My geodesic oven project: part 1, part 2

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