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Fireclay in Europe (DK) - Forno Bravo Forum: The Wood-Fired Oven Community



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Dear forum users,
Thank you for your patience with the Photo galleries. We've got your galleries online!
We have finished writing a custom script to migrate the PhotoPlog to vBulletin5’s albums.

Unfortunately V-Bulletin killed the "Photoplogs" in their software upgrade which was unforeseen and we're the first development group to have written a script for getting the galleries back... that said, it took some time to reverse engineer the code and get the albums to move over seamlessly!

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In order for users to create an album please follow the steps below.
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To create this migration path we used vBulletin5’s default album structure. Unfortunately, it won’t work like the “PhotoPlog” but is an album/gallery component on the forum now.
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Fireclay in Europe (DK)

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  • Fireclay in Europe (DK)

    Hello All,
    I really want to be using the homebrew mortar for my oven and I've been searching like a mad man for fireclay, but so far I haven't been able to find anything which matches the description of fireclay. I find this strange because when I read through old threads on this forum, I often see people mention that fireclay is used widely in construction here in Europe (I'm from Denmark btw).

    Can anyone prehaps tell me the name of one of the major brands here in Europe? Perhaps I can then find it by searching for the brand instead of the term "fire clay".

    If everything fails and I can't find fireclay is the anything I can use instead?
    Sand, portland, lime and ...?

  • #2
    Re: Fireclay in Europe (DK)

    The fireclay component of the home brew is to make the mortar sticky and plastic. Since our ovens don't get to the temperatures were the refractory nature of fireclay is required you can substitute powdered clay made for masonry use. Often you can find " bricklayers sand " with the clay already added.
    Hopes this will help you widen you search
    Regards dave
    Measure twice
    Cut once
    Fit in position with largest hammer

    My Build
    My Door


    • #3
      Re: Fireclay in Europe (DK)

      it might be called "Mortar Clay"


      • #4
        Re: Fireclay in Europe (DK)

        Thanks for your answers guys and sorry for my late reply. I've been pretty occupied with work lately.

        Someone mentioned to me that fire clay properly is the same as Chamotte. Can anyone confirm or deny this? Chamotte also seems to be called Grog in English: Grog (clay) - Wikipedia, the free encyclopedia


        • #5
          Re: Fireclay in Europe (DK)

          A true fireclay as used by potters or refractory manufacturers is a highly refractory unfired clay (able to withstand very high temps).
          Chamotte (grog) is fired to around 1000C and then ground. It will not break down to the extremely small particles like unfired clay will. Another advantage is that it is already shrunk so can reduce overall shrinkage if added to a clay body. There is all kinds of grog, ground to different grades. Potters use it to add to clay bodies for different purposes in their production.
          The fireclay bricklayers use is not a specially refractory clay like a true fireclay (at least that is the situation in Australia), it is a powdered clay quite high in silica (the glass former)
          Because we do not fire to extreme temperatures I think any unfired powdered clay should be ok. Bricklayers clay, which is the cheapest, is what I use.
          Sorry about the longwinded reply, but there is considerable confusion about fireclay, hope this helps.
          Last edited by david s; 06-18-2013, 02:20 PM.
          Kindled with zeal and fired with passion.