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  #71  
Old 12-16-2013, 12:05 PM
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Default Re: cobblerdaves build

Gudday
cobblerdaves build-image.jpg
Better?
I borrowed a 12 in chop saw with a masonsry blade fitted, but the dust was truly scary. I prefer not to wear a mask, why not enjoy the day! The chop saw was mainly used to cut small slithers for over the oven entrance.
The rest is brick cut in 1/2s with a brick bulster then those 1/2s cut again giving you 1/4s . The face you see is 1/2 a brick on the long side 1/2 as thick.
To the top of the oven this were again cut cut down in 1/8s
Regards dave
Ps check out gulfs build he has cut his brick into " tiles" with a wet saw a lot more consistent thickness.
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Last edited by cobblerdave; 12-16-2013 at 12:10 PM. Reason: Spelling
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  #72  
Old 12-17-2013, 11:42 PM
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Location: Bohol Philippines
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Default Re: cobblerdaves build

I used a wet saw once for tile, likely a different thing. Have a 10" chop saw and Sho made a test cut a couple weeks back down by the ocean. He said no problem with the dust but normally the breeze is blowing pretty good out there.

Great dome shape, that's so appealing. I've read that only the brick should be exposed to the direct flame and not the mortar. In other words that the bricks should meet on the inside and be raised a bit in the back which is where the refractory mortar goes. Is that what you did cobblerdave? Is it even accurate?
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  #73  
Old 12-18-2013, 04:03 AM
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Default Re: cobblerdaves build

Gudday Lancer
I can see the sea breezes bowing the dust away from your face and the internals of its motor but you might want the check out Bathurst build 100 ish in the Aust section for some niffy mods to a drop saw.
On the subject of mortar, as you build the oven the mortar acts as the glue to hold the pieces in place. Once that last brick goes in the role of the mortar changes. Its now a dome and owes its strength to its shape ( and Gravity) rather than the strength of the mortar. The mortars role is now one of a cushioning between the brick parts and the orientation of the bricks rather than the primary glue. In the home brew mix the Portland cement will be burnt out by the heat and at the same time the lime will be set by the heat and be the final "glue" in the mix. "Glue in the sense that it keeps the sand together in the mortar and the mortar stuck to the brick, rather than being the strength of the dome.
Can I suggest checking out a build in the "getting started" section, page 2 called "Budget build 36" ". Pages 12 and 13 you'll find pics of the completed dome sides and roof. This build has minimal cuts in its construction and larger mortar gapes than your probably used to seeing. Its a dome so, its strong as a fancy cut one is and I'm sure it will be used for many years to come. Particularly note the date from start to pizza you'll be amazed on how quickly it was constructed.
hope something here helps
Regards Dave
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  #74  
Old 12-18-2013, 06:08 AM
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Default Re: cobblerdaves build

Lance,

I was one obsessed with having tight joints throughout the whole brick. I spent countless hours at the wet saw to accomplish. In the end, if I were to build another build, my focus would to have tight brick joints on the interior of the oven "only" and not worry so much about the gaps on the outer portion of the dome (mortar is your friend). Still and advocate of tight inner joints though.
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  #75  
Old 12-19-2013, 01:56 AM
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Default Re: cobblerdaves build

Great advice guys! That is perfect dome cobblerdave, and now I know its a source of strength as well. It amazes me the knowledge you guys have accumulated. Thanks for sharing.
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  #76  
Old 12-19-2013, 10:36 PM
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Default Re: cobblerdaves build

Quote:
Originally Posted by cobblerdave View Post
Can I suggest checking out a build in the "getting started" section, page 2 called "Budget build 36" ". Pages 12 and 13 you'll find pics of the completed dome sides and roof.
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Last edited by brickie in oz; 12-19-2013 at 10:42 PM.
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