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A few questions from Austin TX - Forno Bravo Forum: The Wood-Fired Oven Community

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A few questions from Austin TX

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  • #16
    Here is one I show people all the time when they are doing opening like yours. It is from Mr Chipster and it also shows how the it is used to do an inner taper arch. The height of the opening of the arch should be abt 63% of the "radius" of the ID of the oven, IE 42" oven = 21" X .63 = 13.25. Width is user preference so 20" wide is fine.
    Russell
    Build Link............... Picassa Photo Album Link

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    • #17
      One question regarding the inner arch transition; with the IT I can draw a line with the inner and outer diameter of the oven and from then on the slope. Do you cut the bricks at that line or a bit lower, minus the mortar joint?
      Greetings.

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      • #18
        Just cut on the line. You do not know at this point if these bricks will be in line with the joints on the dome. Each brick is slightly different. You start with the top dead center brick of the tapered inner arch the work your way down left and right of TDC and using the previous brick as a baseline for the next one in conjunction with the IT. You need to use start with whole bricks on a tapered arch not half bricks. If you want even joint lines, then you will need to taper the bricks first, place, then do your cutting for the tapered "inner" arch.
        Last edited by UtahBeehiver; 06-15-2017, 05:04 AM.
        Russell
        Build Link............... Picassa Photo Album Link

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        • #19
          Not a good idea to taper the bricks frist and then mark them layer by layer, cut them and mortar them? Without starting with the TDC brick I mean.

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          • #20
            I think I am finally starting to get it. Thanks so much for the explanations and pictures. I had actually seen some of these before and couldnt grasp the idea until I had bricks in hand.

            Mocked up the bricks height at center of opening and 21" distance from center and snapped a couple pics.

            If someone could take a look, would be great and let me know if you think I need to move the opening closer .

            Either way, I will work on the form as suggested.

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            • #21
              Only a suggestion on laying out the arch first. I see it quite often where a builder builds the arch as they go and end up with an odd width, either too big or too small. Even though this is the inner arch that is not as readily seen as the outer arch, it will be good practice to get good spacing so when you do the vent chamber and outer arch you golden.
              Russell
              Build Link............... Picassa Photo Album Link

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              • #22
                Originally posted by UtahBeehiver View Post
                Just cut on the line. You do not know at this point if these bricks will be in line with the joints on the dome. Each brick is slightly different. You start with the top dead center brick of the tapered inner arch the work your way down left and right of TDC and using the previous brick as a baseline for the next one in conjunction with the IT. You need to use start with whole bricks on a tapered arch not half bricks. If you want even joint lines, then you will need to taper the bricks first, place, then do your cutting for the tapered "inner" arch.
                Think I got it now. You draw the lines with the IT on one side of the brick and on the other side of the brick you take the lines from the brick next to it? So the cuts are also in an angle,and not 90?

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                • #23
                  Right on, Then the bottom angle is the arch of the ID of the dome.
                  Russell
                  Build Link............... Picassa Photo Album Link

                  Comment

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