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  #21  
Old 01-27-2013, 01:34 AM
dimitrisbizakis's Avatar
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Default Re: Clay Mortar

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Originally Posted by cobblerdave View Post
Gudday
That's right you don't need perfectly tapered bricks to achieve a perfectly strong and working dome. Just looks better that's all. You'll find that the top of the oven will require 1/4 bricks instead of 1/2s due to the tighter curve
Regards dave
I don't have a water saw, tapered brick's is not an option for me anyhow.
I did search for an angle grinder diamond blade and the cheapest 150mm i found was 40 euros...sooo.. chisel and hammer!
The only problem i have is the curve cut's i need to do on the floor for the dome to sit outside of it.

Last edited by dimitrisbizakis; 01-27-2013 at 03:09 AM.
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  #22  
Old 01-27-2013, 03:23 AM
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Default Re: Clay Mortar

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Originally Posted by dimitrisbizakis View Post
I don't have a water saw, tapered brick's is not an option for me anyhow.
I did search for an angle grinder diamond blade and the cheapest 150mm i found was 40 euros...sooo.. chisel and hammer!
The only problem i have is the curve cut's i need to do on the floor for the dome to sit outside of it.
Dimitrisbizakis,
There are a lot of succesful builds on this forum with the dome sitting on top of the floor. There are a lot of pros and cons on this subject. But, had I built my oven with only a brick-set, the dome would definately be sitting on top of the floor brick.
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Last edited by Gulf; 01-27-2013 at 03:24 AM. Reason: spelling
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  #23  
Old 01-29-2013, 02:54 AM
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Default Re: Clay Mortar

Thank you wotavidone, one more thing.
I can find only find bags of hydrated lime(with some water in it), is the recipe the same?
How much water i have to add or this is not a big deal?
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  #24  
Old 01-30-2013, 01:05 AM
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Default Re: Clay Mortar

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Originally Posted by wotavidone View Post
Not sure I understand the question?
We have several products here in Australia.
They are quicklime (or burnt lime) which is Calcium Oxide. This is the stuff you slake with water, and make a lime putty before you use it. Not commonly available where I buy my stuff.

The one I used was hydrated lime (or slaked lime) which is Calcium Hydroxide.
This is the one commonly sold here as brickies lime, plasterers lime, etc.
However both products are dry powder when you get them.
When you say "with some water in it", do you mean it's actually wet when you get it, or do you just mean it has been reacted with water?
It's on a water proof plastic bag and it's like butter, i think this is the lime putty that you said.
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  #25  
Old 01-30-2013, 04:13 AM
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Default Re: Clay Mortar

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Originally Posted by wotavidone View Post
Wow, genuine lime putty!! I've never seen it and don't know how to use it.
Hopefully someone will tell us what to do with it.
Perhaps the manufacturer?
The funny thing is that I can't find quicklime anywhere!
The masonry building stores have only lime putty, perhaps because it's easyer to steel the costumer with that way
Anyway I think that one part of lime putty has more quicklime in it, so with 3:sand, 0,50:lime putty,1:cement and 1 fireclay I think it will be ok, as far as I know for lime, more of it it won't make any harm.
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  #26  
Old 01-30-2013, 04:41 AM
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Default Re: Clay Mortar

Lime putty is ready to use, just keep it wet until you use it and it will last indefinitely. All mortar measurements are by volume so use it just like dry.
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  #27  
Old 01-30-2013, 10:32 PM
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Default Re: Clay Mortar

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Originally Posted by Tscarborough View Post
Lime putty is ready to use, just keep it wet until you use it and it will last indefinitely. All mortar measurements are by volume so use it just like dry.
Thank you for your help.
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