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  #21  
Old 08-27-2013, 06:55 AM
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Default Re: Somewhere in the slumering suburbs of Stockholm

Quote:
Originally Posted by texman View Post
What is the A-team place.?

Ya know Tex,
I really don't think that they ever actually got a pardon from the US military. That may just be where they are holed up .

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  #22  
Old 08-27-2013, 07:07 AM
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Post Re: Somewhere in the slumering suburbs of Stockholm

That is the only a-team i know.
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  #23  
Old 08-27-2013, 10:07 AM
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Default Re: Somewhere in the slumering suburbs of Stockholm

Oh, i'm sorry about that one. It's a very direct translation of the Swedish word for bench drinkers (A-Laget). I should have thought of that.
A = Alcoholics, Laget = Team
So the alcoholics in Sweden are really the A-team.

I hope that clear any misconception.
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  #24  
Old 08-27-2013, 10:08 AM
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Default Re: Somewhere in the slumering suburbs of Stockholm

I have a question. Is refractory mortar and fire clay the same thing ?
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  #25  
Old 08-27-2013, 11:35 AM
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Post Re: Somewhere in the slumering suburbs of Stockholm

two different things. Refrac mortar is a mix of sand, fireclay, cement and lime. Fireclay is :

High grade fire clays can withstand temperatures of 1775C (3227F), but to be referred to as a "fire clay" the material must withstand a minimum temperature of 1515C (2759F).[2] Fire clays range from flint clays to plastic fire clays, but there are semi-flint and semi-plastic fire clays as well. Fire clays consist of natural argillaceous materials, mostly Kaolinite group clays, along with fine-grained micas and quartz, and may also contain organic matter and sulphur compounds.
Fire clay is resistant to high temperatures, having fusion points higher than 1,600C, therefore it is suitable for lining furnaces, as fire brick, and manufacture of utensils used in the metalworking industries, such as crucibles, saggars, retorts and glassware. Because of its stability during firing in the kiln, it can be used to make complex items of pottery such as pipes and sanitary ware.
Chemical composition[edit source | editbeta]

The chemical composition typical for fire clays are 23-34% Al2O3, 50-60% SiO2 and 6-27% loss on ignition together with various amounts of Fe2O3, CaO, MgO, K2O, Na2O and TiO2.[2] Chemical analyses from two 19th century sources, shown in table below, are somewhat lower in alumina[3][4] although a more contemporary source quotes analyses that are closer.[5]
Fire Clay Compositions
Thorpe[3] King[4] Shackelford[5]
Stonebridge Eisenberg I Eisenberg II Newcastle 1 Newcastle 2 Newcastle 3 N/A
SiO2 (%) 65.10 89.8 64.7 51.1 47.6 48.6 58.1
Al2O3 (%) 22.2 5.40 24.0 31.4 29.5 30.2 23.1
MgO (%) 0.18 0.09 0.40 1.54 0.71 1.91 1.00
CaO(%) 0.14 0.20 0.37 1.46 1.34 1.66 0.08
Iron Oxides (%) 0.18 0.09 0.40 4.63 9.13 4.06 2.40
K2O (%) 0.18 0.61 2.40 not quoted

The long answer.

Tex
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  #26  
Old 08-27-2013, 12:09 PM
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Default Re: Somewhere in the slumering suburbs of Stockholm

I ask because i'm about to spread the underfloor paste. I went to the market and bought something called fire clay. I should have read the smaller print. Translated to:
"With reinforcement made of iron filings. For masonry on iron stove roofs."

The iron filings came seperated in this bag you see in the photo.

The clay was also mixed with small grits about 4mm in size. Perhaps this makes it useless for this purpose.

I also bought a bag of sand and the only sand they had was this sandbox sand. Grain size: 0-3 mm

1. Is this type of sand fine enough ?

2. I also have this refractory masonry and i found this declaration on the web. "Refractory mortar uses a specially formulated dry mortar designed for higher temperatures than usual mortar is capable of. Ordinary aggregates (sand) can not withstand temperatures above 700 C, therefore the sand in weber refractory mortar is replaced with heat-resistant aggregates."

Will this do the job ? Without additional sand.

3 Can i use this fire clay i bought today to something usefull ? and with the iron filings in it.

Last picture is what i made today. I cut out the oven floor. loose assembled it and tried the door on. The floor bricks are a little different in thickness. Not much, but i want to level it. And therefore i need this underfloor paste.
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  #27  
Old 08-27-2013, 12:14 PM
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Default Re: Somewhere in the slumering suburbs of Stockholm

That's some interesting information you got there Tex. I like thoroughly conducted information.

Last edited by Southboom; 08-27-2013 at 12:18 PM.
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  #28  
Old 08-27-2013, 01:04 PM
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Post Re: Somewhere in the slumering suburbs of Stockholm

The fire clay might work, but without the iron. (i dont know what that is for)
The fire clay should crumble easily and not have the chunks in it after you spread it. If it doesn't spread smooth when applied dry, i wouldn't use it there.
You just need enough to level the cooking surface, no more. maybe like an 1/8 to 1/16 ". You can mix some sand with the clay here, but not required. Both the sand and the clay can be sifted to remove larger pieces with an old window screen if you have one. Again, the only purpose of this layer is to level the cooking surface, so don't sweat it too much.

Are you setting the dome on the floor? I hope that is the plan so you will have room for insulation and an enclosure. it looks like you may only have 3-4" of space around the floor in the pic.

The setup looks good as long as you are planning to set the dome on your floor brick and not outside of them.

Texman
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  #29  
Old 08-27-2013, 03:11 PM
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Default Re: Somewhere in the slumering suburbs of Stockholm

Quote:
Originally Posted by texman View Post
The fire clay might work, but without the iron. (i dont know what that is for)
It's for sticking fridge magnets on your pizza oven!

And while i think of it. This might be a good selling point.
Something for the FB staff to look up.

Last edited by Southboom; 08-27-2013 at 05:48 PM.
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  #30  
Old 08-27-2013, 03:39 PM
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Default Re: Somewhere in the slumering suburbs of Stockholm

Actually, i dont know the true meaning of it either. In the instructions it said something about the use inside of the oven roof (old cast iron oven). And now i found this information."Including reinforcement chip for kitchen stove." Must be something dealing with extreme heat (offcourse). I heard that cast iron dissipates and keeps heat extremly well. And it may be that it cracks by the shear stress created by heat without the iron filings. Or an already cracked or about to become is repaired whit this. Just a thought.

And thanks for all the instructions. The dome is setting on the floor. I will post more thoroughly descriptions of the oven tomorrow. I'm taking a free day tomorrow. Gonna go fishing The ultimate relaxation, for me anyway. And after tranquillisation i will pray to the ancient Roman goods before continuing with drawing the plans.

Last edited by Southboom; 08-28-2013 at 02:22 AM.
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