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Clay / Terracotta Pipe for Flue

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  • Clay / Terracotta Pipe for Flue

    Hi, is it possible to use old school clay pipe as the flue? It's cheap as chips (comes up for free or AU$5 on Marketplace all the time) and comes in diameters typically around 5" - 6". See attached pic for reference as an example.

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  • #2
    5" ok for ovens up to around 28" internal diameter (or equivalent chamber volume if not a hemisphere) 6" diam flue for ovens up to 36" and 8" for ovens over 36" otherwise, with a cross draft system (flue at the front) you'll get smoke issues. Also a clay flue needs to be insulated around the outside or it will crack.
    Last edited by david s; 06-15-2021, 09:24 PM.
    Kindled with zeal and fired with passion.

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    • #3
      Thanks David,

      I did think to cut a section away on two then joining them together to get a bigger dia. flue.

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      • #4
        Cutting and joining could be difficult and problematic. How about just a double barrel flue. Another member did it that way a few years ago. Worked ok I think.
        Kindled with zeal and fired with passion.

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        • #5
          Yeah could do - the thing is since these are cheap they pretty much make for a cost effective flue and easy to insulate and brick up around it.

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