#11  
Old 10-31-2009, 10:42 PM
david s's Avatar
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Default Re: separating arch from inner dome and floor

"What do you define as the inner and outer arch? "

You are the first one to mention an inner arch, However the intention is to retain the heat in the dome, so it would be logical to reduce conduction of heat to the flue entry/manifold/ gallery/ or whatever you like to call it. This may not be practical and anyhow it is usually insulated, unlike the outer arch that is uninsulated and open to surrounding ambient temps.
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  #12  
Old 11-01-2009, 01:13 AM
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Thumbs up Re: separating arch from inner dome and floor

David,
like or unlike most other oven builders, I have 2 arches as per shown in the attached pic.
The inner arch bricks are sitting on a lintel steel bar which is curved to meet the shape required, ie. the same contour as the outer arch.
The outer arch does not get hot but I do have a rather large chimney void where all the smoke and hot gasses rapidly escape.
Behind the front arch bricks is a 19mm compressed cement sheet which was used to cement the paving bricks to and remains as a reinforcement for the front panel.

Neill
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separating arch from inner dome and floor-oven-arches.jpg  
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Old 11-01-2009, 04:50 AM
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Default Re: separating arch from inner dome and floor

Neil,
Did you glue the rope seal directly to the oven ? If so is it working ok ?
I was thinking of that but wasnt sure if it would hold ...
Mark
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Old 11-01-2009, 05:05 AM
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Default Re: separating arch from inner dome and floor

I was thinking of attaching the rope to a wood door. How should I attach it?
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  #15  
Old 11-01-2009, 06:37 AM
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Default Re: separating arch from inner dome and floor

they sell refractory rope kits for boilers on ebay,, they are less than 20 bucks.. THey come with a glue to attatch them,, Im sure you could nail/screw/glue it to the door and it would be ok... I just like the Idea of attatching to the brick.. I guess I am gonna have to break down and order 2 so if the glue doesnt hold I can attatch it to the door

Mark
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  #16  
Old 11-01-2009, 11:58 AM
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Default Re: separating arch from inner dome and floor

A very nice photo of your oven Neill,
I've attached a drawing of my oven which shows the separation of the arch from the inner parts of the oven. Maybe I've over designed it, but the parts I want to get hot are free to expand without placing stress on any of the outer parts. I did the same with the flue.
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File Type: zip cross section.jpg.zip (44.6 KB, 104 views)
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  #17  
Old 11-26-2009, 07:56 PM
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Default Re: separating arch from inner dome and floor

So what was your vericulite concrete mix made up of?have you photos of this gap.
I`m about to install my arch and oven and find this usefull as my materials are obviously going to expand and contract at different rates and was wondering if my arch would crack?
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  #18  
Old 11-27-2009, 10:46 PM
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Default Re: separating arch from inner dome and floor

I used a 5:1 vermiculite,cement mix and made the gap that it sits in about 10mm
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