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Chimney plate question - Forno Bravo Forum: The Wood-Fired Oven Community

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I'm Peter Reinhart! Ask Me Anything! Monday, February 15, 2016 7:00-8:00 pm EST

To kick off our AMA feature, we have invited author, chef and master bread maker and host of Pizza Quest, Peter Reinhart, to be our first host! Peter will be in the Forum on Monday, February 15th, from 7:00 - 8:00 pm EST. If you are unable to be online during the live session, you can post your questions in the sticky post. Peter will answer those questions during the live session on February 15th. You can view Peter's answers to your questions as well as what happened during the live session in the session thread.

Ask Me Anything New Forum Feature

You will notice a new forum at the top of the main page called, "Ask Me Anything". This forum will be used for live one hour "Ask Me Anything" (AMA) sessions hosted by people who are knowledgeable in different areas pertaining to wood fired ovens. How it works:
- Each AMA will have a "sticky" thread where the community can post questions they would like answered during the live session. This will allow everyone to participate even if you can't be online for the live session. These questions will not be answered by the host until the live AMA; if you need an answer quickly, you should post it in the appropriate Forum area for the community to respond.
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Chimney plate question

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  • Chimney plate question

    Hi all,

    I am in the process of fixing a stainless steel chimney plate to the vent arch and have struck a small problem. I have read in a number of threads that tapcon screws were recommended for doing this. I managed to get some tapcon screws but ended up stupidly drilling holes in the firebrick that were too large for the screws and I cant get larger tapcon screws from any supplier here in Adelaide. My question is does anybody know whether dynabolts are ok to use? Or does anybody have an alternative way to fix this problem. My other option is to backfill the holes with high temp mortar and then place the screws in and let the mortar set. Any views would be much appreciated.

    Cheers

    Salv
    Salv

    my wood oven build: http://www.fornobravo.com/forum/f21/...uild-5896.html

  • #2
    Re: Chimney plate question

    The old guys just hammered lead slugs into the holes and used ordinary woodscrews to attach things. If you roll up a sleeve of lead flashing for this purpose, you get a pilot hole in the center already.
    My geodesic oven project: part 1, part 2

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    • #3
      Re: Chimney plate question

      Can you not create a new set of holes in the plate and brick?

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      • #4
        Re: Chimney plate question

        I reckon the high temp mortar will do a fine job of holding them down, otherwise the dynabolts would also work. They are only holding down the plate when/if there is any load (from wind i guess) on the chimney, otherwise they are not really doing anything structural.

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        • #5
          Re: Chimney plate question

          Hi Salv,

          I agree with glennb; high temp mortar should work well if it is just to stop movement. Depending on the strength of your fire bricks dyna bolts may crack them if you try to tighten them too much; but if pinched tight they should work fine also. Good luck, let us know how you get on. I'm not up to that point yet so am very interested.

          Benny

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          • #6
            Re: Chimney plate question

            Thanks everyone for the advice.

            I was looking at drilling new holes as a last resort - the bricks the chimney plate sits on are mortared to the vent arch and I didn't want to run the risk of the bricks cracking.

            As Benny mentioned I am also worried that using Dynabolts will crack the bricks so at this stage I am leaning towards backfilling with mortar. Although I do like Dmun's suggestions of using lead slugs, however this is a new technique to me and am not too sure how it works.

            Will post some details once I decide what to do - I'm presently doing more fun things - curing fires!

            cheers

            Salv
            Salv

            my wood oven build: http://www.fornobravo.com/forum/f21/...uild-5896.html

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