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What is this do I need one - Forno Bravo Forum: The Wood-Fired Oven Community



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What is this do I need one

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  • What is this do I need one

    What is this thing?? and what does it do? and will I need one???
    A newbie still contemplating and researchingName:  a120c68daf6769a68a2aff013ea8bb06.jpg
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  • #2
    Re: What is this do I need one

    Ah, that is a jig for positioning the bricks as you lay each chain to ensure they have the right angle to make a dome shape. It helps ensure a perfect arc from the center. Do you need it? Well it depends, lots of folks here will swear by them. Personally, I built my oven without one and six months on things seem fine. I'd say if you plan on building a few of these then maybe the jig is worth the investment of time and energy. I put myself on a strict budget and found using a quarter round shape of celotex that I used as a guide worked fine. When I reached the last few chains when the dome was more horizontal I inserted an exercise ball inside and it supported the bricks.


    • #3
      Re: What is this do I need one

      They will give you a hemispherical shape.

      In my opinion an elliptical shape is preferable. For this I suggest you use a home made Styrofoam "fan" form. Cheap and easy to to do.
      Attached Files
      Last edited by Neil2; 03-12-2010, 04:43 PM.


      • #4
        Re: What is this do I need one

        It's the "indispensable" tool invented, I think, by Hendo. It comes in lots of flavors, including ones with clamps, although I'm a little dubious about that. Here's one by Pizza Bob that has a variable length, so you can use it to make elliptical section domes:

        My geodesic oven project: part 1, part 2


        • #5
          Re: What is this do I need one

          If you are a novice brick layer when you start this project the tool is true to its name. It is indispensible. Now that I have laid 3 courses I think I probably could do it without the tool based on the practice that I have had. It helps to maintain the correct angles so your dome will be the shape you envisioned it. There are many variations on the tool, I find the clamp is helpful. I am hoping to be done with my dome by the end of March ( I was also hoping to eat wood fired pizza for the super bowl, but that one didn't happen)message me when you are ready to get started.


          • #6
            Re: What is this do I need one

            I used a cardboard pattern.
            My thread:
            My costs:
            My pics: