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36inch build in Redlands

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  • #16
    Re: 36inch build in Redlands

    I don't bother covering it. The cardboard itself prevents almost all material from falling in the space. It fills with wood ash anyway.
    Kindled with zeal and fired with passion.

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    • #17
      Re: 36inch build in Redlands

      How am I looking for inner arch location? Its all just mocked up for now but seems like an important step and I want to get it right before I cut the floor tiles to fit inside.

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      • #18
        Re: 36inch build in Redlands

        If it was mine I'd be tapering those arch bricks and trimming about 10 mm off the bottom of the arch form, then place some wedges under it so the form can be dropped. Otherwise you'll have difficulty getting the form out and risk damaging your newly laid arch.
        Kindled with zeal and fired with passion.

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        • #19
          Re: 36inch build in Redlands

          Stevo

          David's right, on both counts.
          Cheers Colin

          My Build - Index to Major Build Stages

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          • #20
            Re: 36inch build in Redlands

            Thanks Colin and David, Good advice. Do you think my arch is in the correct position as far as being not too far in and not too far out?

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            • #21
              Re: 36inch build in Redlands

              Hi Stevo

              It may just be the photo [optical illusion] and the angle but the Brick in your IT looks like it is around the wrong way.
              Cheers Colin

              My Build - Index to Major Build Stages

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              • #22
                Re: 36inch build in Redlands

                Gudday
                Draw a mockup of you oven dome full size showing full thickness of brick on large bit of cardboard. Make one of the floor showing the brick as well. You can then play with some bricks with it. You see very quickly why davids said to cut an angle in the back of your arch
                Regards dave
                Measure twice
                Cut once
                Fit in position with largest hammer

                My Build
                http://www.fornobravo.com/forum/f51/...ild-14444.html
                My Door
                http://www.fornobravo.com/forum/f28/...ock-17190.html

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                • #23
                  Re: 36inch build in Redlands

                  Originally posted by oasiscdm View Post
                  Hi Stevo

                  It may just be the photo [optical illusion] and the angle but the Brick in your IT looks like it is around the wrong way.
                  The bricks I acquired are a strange size. Have cut them into 4 which still gives me the 4.5" wall thickness but it is a small brick. Could leave them in halves if I want to but the arch looks neater with smaller bricks.

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                  • #24
                    Re: 36inch build in Redlands

                    Yes I can understand why you would cut the arch on an angle but in my case, I have ended up with the inner arch a little narrow, (75mm front to back) so don't really want to take any more meat out of it to keep it as strong as possible. It will be the back edge of the chimney which I want to start off with bricks going about a foot high so even more weight. Might have to cut some strange angles on the dome bricks that come around that part. I actually did draw it up on cardboard and used a piece of string to see where I would end up but the more I looked at it, the more it confused me.

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                    • #25
                      Re: 36inch build in Redlands

                      Gudday
                      I went back and checked out your brick. There plenty big enough.
                      Remember your building 2 of the strongest types of building on the planet the dome and the arch. Both of which depend of gravity for there strength. You want to be able to lock both the dome and the arch in together so cutting a slip of the arch is a good thing.
                      Regards dave
                      Measure twice
                      Cut once
                      Fit in position with largest hammer

                      My Build
                      http://www.fornobravo.com/forum/f51/...ild-14444.html
                      My Door
                      http://www.fornobravo.com/forum/f28/...ock-17190.html

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                      • #26
                        Re: 36inch build in Redlands

                        G'day Dave, I probably misled you with my picture in #17. I had just mocked that up with any bricks I could find just so you can get the picture of where I intended to place my inner arch and its contact angle with the dome brick. I have now cut the bricks I will be using and they have a reveal in the bottom to suit the door stop, as do the sides of the arch. As I said before they are only 75mm thick and I don't want to leave the arch too thin but I should be able to run a string line across them and take a small slice off. Yes they will sit neater that way I agree. Maybe the arch will regain its strength once the dome bricks are mortared to it?

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                        • #27
                          Re: 36inch build in Redlands

                          Gudday
                          The strength in the arch is we're the bricks touch on the inside face. The mortar wedge is there to keep the outer pieces apart and orientate the bricks so that gravity can keep the thing locked together. The mortar is a glue in some ways but it also function as a shock resistant spacer as the oven heats and cools expands and contracts.
                          Same with the dome it's the brick to brick contact to the structure that supplies the strength the mortar at the back just helps to keep the brick in the correct position.
                          Regards dave
                          Measure twice
                          Cut once
                          Fit in position with largest hammer

                          My Build
                          http://www.fornobravo.com/forum/f51/...ild-14444.html
                          My Door
                          http://www.fornobravo.com/forum/f28/...ock-17190.html

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                          • #28
                            Re: 36inch build in Redlands

                            Ok you've talked me into it. I'll chop em...

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                            • #29
                              Re: 36inch build in Redlands

                              Thought I would post up some pictures of how things are panning out. I'm pretty happy with how its looking so far, Inner arch is going to be very neat I think. Finished the second chain just now. Will chamfer the top of the inner arch bricks but will wait until Im up that high so I can cut them in the correct place.

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                              • #30
                                Re: 36inch build in Redlands

                                Originally posted by stevo70 View Post
                                Will chamfer the top of the inner arch bricks but will wait until Im up that high so I can cut them in the correct place.
                                Good idea, you'll find you've gone to far with the arch bricks already and you can see that the last three coarse's are not going to marry up with the dome correctly.you can use your indispensable tool to give you an idea how far the arch bricks need to come back.
                                My build. http://www.fornobravo.com/forum/f51/...ton-18665.html

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