#11  
Old 05-28-2011, 09:50 PM
Peasant
 
Join Date: May 2011
Location: Victoria
Posts: 36
Default Re: Hi, new Aussie

yeah i think bit thin too.fingers crossed! planning on another arch in front with vent and small chimney. bricking up the sides and enclosing the whole thing. walls will add some support for sides of arch carying the load of the chimney
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  #12  
Old 05-29-2011, 12:51 AM
david s's Avatar
Il Pizzaiolo
 
Join Date: Mar 2007
Location: Townsville, Nth Queensland,Australia
Posts: 4,824
Default Re: Hi, new Aussie

Nice work. Your 65mm of vermicrete should be ok provided you didn't go richer than 5:1 (more cement = poorer insulation). The vermicrete takes up tons of water, so if you didn't dry it out well before putting the floor over it, then water removal via curing will take some time. Melb. weather at this time of year is not great drying weather.I really like the Romanesque style arch, hope you build a larger one in the same style for your outer decorative arch.
Dave
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  #13  
Old 05-29-2011, 01:49 AM
Peasant
 
Join Date: May 2011
Location: Victoria
Posts: 36
Default Re: Hi, new Aussie

cheers dave. i did use a 5:1 ratio for the "vermicrete" and it sure did use up tons of water. i've now covered the whole thing in plastic to keep any moisture / rain out and plan to leave it to cure for a week maybe two. then some tiny fires to dry it totaly i think. I do plan on a 230x230 gothic elipse arch (same style) in front of the one there already with a vent opening and small chimney on top. ill post some pics as it goes up
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  #14  
Old 06-04-2011, 10:53 PM
Peasant
 
Join Date: May 2011
Location: Victoria
Posts: 36
Default Re: Hi, new Aussie

so ive started curing the oven and it has some cracking. nothing so bad that i think it is going to collapse but it will obviously let some heat out. Can anyone let me know what is an acceptable amount of cracking? have others also had similar issues and how have they affected your oven?
Thanks.
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  #15  
Old 06-04-2011, 11:22 PM
brickie in oz's Avatar
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Join Date: Mar 2009
Location: Whittlesea
Posts: 3,455
Default Re: Hi, new Aussie

They all crack, and all still work too.

The blanket and vermiculite will keep any small amount of heat from getting away.
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  #16  
Old 06-04-2011, 11:23 PM
Peasant
 
Join Date: May 2011
Location: Victoria
Posts: 36
Default Re: Hi, new Aussie

thanks thats what i was hoping to hear
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  #17  
Old 06-04-2011, 11:42 PM
david s's Avatar
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Join Date: Mar 2007
Location: Townsville, Nth Queensland,Australia
Posts: 4,824
Default Re: Hi, new Aussie

Suggest you read the thread on oven curing and follow the guidelines.
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  #18  
Old 06-11-2011, 04:23 PM
Peasant
 
Join Date: May 2011
Location: Victoria
Posts: 36
Default Re: Hi, new Aussie

pics of vermiculite insulation.Hi, new Aussie-img_0390.jpgHi, new Aussie-img_0391.jpg


I'will be building a brick enclosure now and plan on a loose fill insulation. can anyone suggest a cheapish matierial to use?
A friend suggested sand would this be ok? if so what kind of sand?
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  #19  
Old 06-11-2011, 04:47 PM
brickie in oz's Avatar
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Join Date: Mar 2009
Location: Whittlesea
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Default Re: Hi, new Aussie

Dont use sand, sand adds thermal mass and will not insulate.
Get some vermiculite its around $30 for a 100 litre bag.

Did you use some ceramic blanket over the top of the oven first?
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  #20  
Old 06-11-2011, 04:52 PM
Peasant
 
Join Date: May 2011
Location: Victoria
Posts: 36
Default Re: Hi, new Aussie

didnt use blanket cant afford it was hoping for something cheaper than vermiculite but may just have to save for a bit. thanks for the tip bout the sand
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