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  #111  
Old 05-06-2013, 06:06 AM
david s's Avatar
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Location: Townsville, Nth Queensland,Australia
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Default Re: Camo's new 36" build Brisbane

You can do that but the extra blanket on top might create some funny forms. The main reason for doing a vermicrete layer is, apart from extra insulation, as a way of getting a nice form which covers over the uneven lumps and folds that are unavoidable with the blanket. Filling them with extra render to get a decent form is a pain.
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  #112  
Old 05-06-2013, 02:37 PM
Laborer
 
Join Date: Jul 2012
Location: Brisbane Australia
Posts: 60
Default Re: Camo's new 36" build Brisbane

Thanks David - after thinking about it for a while I have decided to lay the perlite vermiculite layer even though I don't need it - just to keep the shape
Cheers
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  #113  
Old 05-06-2013, 04:56 PM
UtahBeehiver's Avatar
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Location: Salt Lake City, Utah
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Default Re: Camo's new 36" build Brisbane

Camo,

I did exactly what you are thinking, eventhough I had 3" of CF I installed perlcrete to give my dome the nice round shape. Make yourself a curved trowel to help you keep a consistent dome shape.
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  #114  
Old 05-23-2013, 04:19 AM
Laborer
 
Join Date: Jul 2012
Location: Brisbane Australia
Posts: 60
Default Re: Camo's new 36" build Brisbane

Well I've nearly finished the Vermiculite/Perlite layer - All I need to do is iron out a few bumps. That mixture was sure hard to get onto the dome!!! I had to change the mixture a fair bit as I could only get hold of the jumbo size perlite. I was mixing at 5 parts Verniculite 5 x perlite - 1 x cement and 3 x water however it was quite difficult to handle and eventually settled on 6:3:1:3 which worked out much better.

For those in Brisbane got the 100L bags of Vermiculite/Perlite at Capalba Produce for about $30 ea.


As the oven is going to be in the weather I plan on putting a small (one inch dia) brass pipe with a screw on cap on top of the oven much the same as Cobbler Dave has done. This should release any moisture that the oven may soak up especially in the humid wet summers we have

Any thoughts about this ???
Regards

Camo
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  #115  
Old 05-23-2013, 04:47 AM
cobblerdave's Avatar
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Location: brisbane australia
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Default Re: Camo's new 36" build Brisbane

Gudday Camo
Ovens looking good,you should be proud of your work.
The vent of top of the dome will work to get rid of the moisture you dome/ hearth brick will just attract out of the humid air. The main culprit in our climate is that entrance hearth . Get a good storm and rain drives in on that and its a direct path to your hearth insulation and eventually all the insulation in your oven. I keep a wheather eye open and put a small tarp on the entrance hearth with a couple of bricks on top. Ugly but it works. I'll eventually will put a outer wheather door when I figure out how to keep it on some how without it being blown off in a "big buster"
Regards dave
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  #116  
Old 05-23-2013, 05:26 AM
Peasant
 
Join Date: May 2013
Location: Brisbane, Australia
Posts: 38
Default Re: Camo's new 36" build Brisbane

Hi. I am now a newbie at this but being based in Brisbane was particularly interested in this thread and Brett's build. I haven't read all the forum info yet and it may contain what I'm looking for - but I'm struggling to find a dimensioned sketch drawing of the complicated area at the oven landing, vent landing, oven interface. The FB ver2 document shows the shape but no dimensions (page 14). It might sem obvious to you experienced folk but I see a lot of discussion about this area and I want to get the basics right here. I'm planning a 900mm build and have a built an elevated slab 1500 wide and 1750 deep. This was based on a 300mm oven landing and 150mm vent landing as recommended. Now, based on the plan of page 14 and the photo page 1, the oven landing - is it at the slab level? Or is it intended to be up at the level of the top of the vent landing? The photo does not seem to have a 300mm depth? Hence I hope you see my uncertainty and hoping to get some advice and sketches if they are available. Thanks
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  #117  
Old 05-23-2013, 07:00 AM
Il Pizzaiolo
 
Join Date: Jan 2012
Location: Australia
Posts: 1,037
Default Re: Camo's new 36" build Brisbane

Hey dave

Cant you make the outer door a compression fit.
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Last edited by oasiscdm; 05-23-2013 at 08:08 AM.
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  #118  
Old 05-23-2013, 01:23 PM
cobblerdave's Avatar
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Default Re: Camo's new 36" build Brisbane

Quote:
Originally Posted by Brooky Tom View Post
Hi. I am now a newbie at this but being based in Brisbane was particularly interested in this thread and Brett's build. I haven't read all the forum info yet and it may contain what I'm looking for - but I'm struggling to find a dimensioned sketch drawing of the complicated area at the oven landing, vent landing, oven interface. The FB ver2 document shows the shape but no dimensions (page 14). It might sem obvious to you experienced folk but I see a lot of discussion about this area and I want to get the basics right here. I'm planning a 900mm build and have a built an elevated slab 1500 wide and 1750 deep. This was based on a 300mm oven landing and 150mm vent landing as recommended. Now, based on the plan of page 14 and the photo page 1, the oven landing - is it at the slab level? Or is it intended to be up at the level of the top of the vent landing? The photo does not seem to have a 300mm depth? Hence I hope you see my uncertainty and hoping to get some advice and sketches if they are available. Thanks
Gudday
I know there no definite dementions because there is no standard brick size really. So work on the entrance depth being say a nominal brick and a 1/2 approx 300 ml and your chimney a brick spacing aprox 200 mm. 200 x 200 is enough chimney for a 1mtr oven. The hearth is best I recon level with the oven hearth and the entrance hearth finishing at the edge of the slab leaving no fussy lip.
Now in saying all this the critical point you have to find out is where you entrance intersects the dome . Find this out
early it will determine the middle of the dome and its placement.
My own oven is has a 400 ml entrance and works just fine.
Hope something in here helps.
Have you started your own thread yet if not consider it and you'll attract answers you adapt and fit to your needs
Regards dave
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  #119  
Old 06-13-2013, 10:34 PM
Laborer
 
Join Date: Jul 2012
Location: Brisbane Australia
Posts: 60
Default Re: Camo's new 36" build Brisbane

Well guys, I have been burning in my oven in over the last couple of weeks and a great excuse to open a couple of bottles of wine with a few mates for the lighting ceremony. Anyway I started off very slowly, just a few sticks and took her up to 50 celcius and then to 100 over a few burns and then for longer periods. The whole of the inside of the oven went black , I'm using a hardwood called Ironbark and it seems also quite resonist as it seemed to leave a reson like coating on the bricks.
I've kept this up all week. Yesterday I got her up to 400 degrees celsius over a couple of hours - the oven started to self clean and all was looking good.........
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  #120  
Old 06-13-2013, 10:39 PM
Laborer
 
Join Date: Apr 2013
Location: Wello point
Posts: 60
Default Re: Camo's new 36" build Brisbane

Looking good mate. Will be hard to have the discipline to not just crank it up straight away.
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