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Hairline cracks - 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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Hairline cracks

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  • Hairline cracks

    I have been in the final stages of readying a new beehive oven, been on several other threads about curing. Took about a month of heater/fan inside the oven as I built the enclosure and insulated everything, and the last week and a half or so of increasingly hot/long fires. It's been real cold here, so I've tried to go slowly. Last fire held about 800 f at the dome for about a half hour, and I've been monitoring the temps with an infrared thermo and ramping everything up slowly.
    Yesterday my wife really wanted to do pizza, so she stoked it up pretty strong pretty early in the process. We let it cool back down some before stoking it up to a full 900 or so for a while.
    The pizza was perfect, but I've got a bunch of hairline cracks showing in the mortar (not the bricks) in a bunch of places. Most of these are in the middle rows. I think the photo shows them pretty well, especially at the top of the photo.
    Should I be worried about this, or is this fairly normal? The dome was pretty decently constructed, I hope.

  • #2
    Re: Hairline cracks

    spazio,
    I agree, your dome looks to be well constructed and it looks like you used refractory cement.
    I wouldn't worry about minor hairline cracks especially around your mortar lines as these could be caused through poorer adhesion of the mortar to the bricks if the bricks were cemented dry into the dome. I always wet my bricks in fact in hot dry summer times, soak my bricks in water before mortaring them in.
    All looks fine, don't worry and enjoy.
    It looks like you have the same trouble as me with non-circular pizzas, but you will get better with experience and playing with different flours and techniques, but they still taste the same eh!!! wonderful.

    All the best mate.

    Neill
    Prevention is better than cure, - do it right the first time!

    The more I learn, the more I realise how little I know


    Neillís Pompeiii #1
    http://www.fornobravo.com/forum/f8/n...-1-a-2005.html
    Neillís kitchen underway
    http://www.fornobravo.com/forum/f35/...rway-4591.html

    Comment


    • #3
      Re: Hairline cracks

      Thanks for the reassurance, Neill. I'm used to working with wood and metal, and this brick and mortar stuff is new to me. I've been busting on my wife for heating it up so quickly; I've been REAL conservative with the heat.
      She sure makes good pizza though! And bread is next.
      Mike
      BTW, I used Heat Stop 50 refractory mortar, it seems to be the standard of the industry here.

      Comment


      • #4
        Re: Hairline cracks

        spazio
        I thought as much as many forum members who have used this/these premixed 'refractory adhesives' experience cracking. It is not necessarily bad unless it cracks straight through the bricks as well.
        I prefer to use the 'poor man's mortar' not just because of cost, but because of the availability and I don't have any cracks in my dome.

        Neill
        Prevention is better than cure, - do it right the first time!

        The more I learn, the more I realise how little I know


        Neillís Pompeiii #1
        http://www.fornobravo.com/forum/f8/n...-1-a-2005.html
        Neillís kitchen underway
        http://www.fornobravo.com/forum/f35/...rway-4591.html

        Comment


        • #5
          Re: Hairline cracks

          The cracks in your oven are fine. No worries at all. And the shape of the pizza looks familier to me as well.
          Joe

          Member WFOAMBA Wood Fired Oven Amatueur Masons Builders America

          My thread: http://www.fornobravo.com/forum/f8/j...oven-8181.html

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