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32 Inch (800mm) Homebrew WFO in NS

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  • #16
    Originally posted by AndreasP View Post
    slainte , I am thinking of building a 32" oven as well and am wondering about casting the dome on top or around the brick floor as well.
    What did you end up doing and how is the oven performing (I assume you finished it?)
    Also, how big did you end up making your gallery, another question I am thinking about
    Thanks
    Go to cast ovens in the Other Oven Types section. There are plenty of cast builds there. The dome can be either sitting on top of the floor or surrounding it. My preference is to build on top as the time involved outweighs the disadvantage IMHO. There are advantages and disadvantages of both ways.
    Kindled with zeal and fired with passion.

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    • #17
      Originally posted by AndreasP View Post
      slainte , I am thinking of building a 32" oven as well and am wondering about casting the dome on top or around the brick floor as well.
      What did you end up doing and how is the oven performing (I assume you finished it?)
      Also, how big did you end up making your gallery, another question I am thinking about
      Thanks
      I also went with casting the dome on top of the fire brick floor, mostly because i was worried i wouldn't be able to cut the bricks in a smooth enough circle.

      My oven isn't at all finished yet, I am working on my gallery form at the moment. The toughest part I have found was trying fit in the insulated chimney pipe without making the gallery too long. I will post some photos with what I come up with.

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      • #18
        I am also in a bit of a bind! I have about 3L of fire clay left to do the gallery with, my supplier said they are out of fire clay and don't expect to get any anytime soon... eeek.
        I have quite a few cut chunks of fire brick that I am considering trying to grind up to supplement my fire clay supply... otherwise I may have to get a shovel and start digging.

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        • #19
          Try a local potter or pottery supplier, but don't ask for fire clay as that is a highly refractory (over 1300C) clay, quite a different material than what is called "fire clay" in the mason's supplies. Ball clay which is about the cheapest potters clay would be the thing to ask for.
          Last edited by david s; 07-21-2021, 01:36 PM.
          Kindled with zeal and fired with passion.

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          • #20
            I have fire clay, I’m near Chester, not sure where you are or if that would help, but if you need some, you could come and get some. Oven looks like it’s coming along great! Keep up the good work.

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            • #21
              Originally posted by Mahone View Post
              I have fire clay, I’m near Chester, not sure where you are or if that would help, but if you need some, you could come and get some. Oven looks like it’s coming along great! Keep up the good work.
              Thanks Mahone! Turns out I had just enough to do the gallery. I also realized that Shaw has other powdered clay, that is not "fire clay". They had some available in Lantz but I didn't end up needing it.

              This is my gallery:

              Click image for larger version

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              Some old rigid foam to make the form. I screwed up a bit early in my design process, I am pressing to hard to keep the gallery as short as possible, and now I won't have a full 6" opening for the flu... it will likely make more sense when I post some more photos later.

              My plan is to let the dome/gallery sit covered for a week. Then add the CF blanket and start the process of adding the perlite/vermiculite layer, which I will do in lifts over a few days. Then after 2 weeks or so to start the slow firing process.

              One question I have is about the outer stucco/render layer. I don't really have a good idea how thick it is supposed to be. Can anyone shed some light on that for me?
              Last edited by slainte; 07-24-2021, 09:08 PM. Reason: edited due to trouble with photo attachment.

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              • #22
                Update on my build:
                The insulation is in place, 2 inches of ceramic fiber blanket over the dome (1 over the gallery) and about 2 inches of perlite/vermiculite over that. I did not use chicken wire.
                I cut some bricks in half and put 3 courses around the bottom so that the stucco/render layer over the perlite/vermiculite will have a better spherical shape.
                I have started doing curing fires. Once I complete the curing fires I plan on placing a brick arch in the front, and placing the stucco layer.

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                • #23
                  The outer layer has been placed, I also have a roof in place over the oven. I am looking into a concrete sealer or something to put over the outer layer. There are certainly some cracks in the interior of the oven, just hoping it still functions fine. I haven't fired it up to pizza temperatures yet, but will this week. Thanks for the help everyone! Now I have to learn how to use it!

                  Click image for larger version

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                  • #24
                    That looks real good! Well done!
                    My 42" build: https://community.fornobravo.com/for...ld-new-zealand
                    My oven drawings: My oven drawings - Forno Bravo Forum: The Wood-Fired Oven Community

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                    • #25
                      That roof will keep the rain off the oven, so you are probably better off allowing the outer shell to breathe as sealing the outer surface also prevents moisture escaping. I really like your roof design, it allows plenty of breeze around the oven to keep both it and your wood dry, nice solution.
                      Kindled with zeal and fired with passion.

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