#21  
Old 12-20-2006, 08:07 AM
Leepinla's Avatar
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Yes, the vent is going too swept back over the oven.
The chimney will come up from the center of the dome.
At least thatís the plan.
Unless I should do it different for some reason
But I have seen it somewhere on the web
I hope it works, OMG itís a lot of work if it doesnít
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  #22  
Old 12-20-2006, 03:51 PM
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Default Re: My Oven/BBQ

Looks great to me Lee, excellent. The first fire is close.

Maver, I think the idea that the vent swept back design is "traditional" is an urban legend. They exist, but there are only a very small number of them. Virtually all of them go up. That's me -- Napoletana myth-buster.

Aren't new blades a great thing.
James
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  #23  
Old 12-20-2006, 04:47 PM
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Default Traditional

I guess by traditional I meant that I read once that it's the VPN way to do it, but I've also seen it discussed here and the merits (the idea that the gases would help keep heat in the oven) seemed to outweigh the disadvantage (harder to keep the flu clean due to angles). I think Leepinla may be making an aesthetic choice, which I think may have more merit than either of the pro or con I listed.
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  #24  
Old 12-20-2006, 06:58 PM
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Default Re: My Oven/BBQ (the Dome is done baby)

This build, starting in May, has been just a vision. just how I see it in my head, with no plains, just a crazy idea, and two years of reading Forno Bravo.
it was great, the walls, the harth, and the bricks, the build has been fun,
and today I closed the dome
The first fire is slated for Christmas day
and a Pizza New Year.
here are some new pic's

Leep.
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My Oven/BBQ-pc200184.jpg   My Oven/BBQ-pc200246.jpg   My Oven/BBQ-pc200247.jpg   My Oven/BBQ-pc200251.jpg   My Oven/BBQ-pc200321.jpg  

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  #25  
Old 12-20-2006, 07:04 PM
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Default Re: My Oven/BBQ

two more brings you all up to today
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  #26  
Old 12-22-2006, 05:27 AM
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Default Re: My Oven/BBQ

The Great thing about a vision,
It can change in an instant.
hahahahaha
So, what do you thing about this?
It is easy to clean this way.
dont think I like the way it looks.
HELP
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  #27  
Old 12-22-2006, 10:46 PM
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Default um, no

I agree with you, it's painful on the eyes that way. How about sweep back over the dome then angle it straight up, so just one angle (keep it to 30 degrees or less), if you have to clean, one approach from the bottom, one from the top. Cover the swept back part with insulation so it looks like it is coming back from the top.
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  #28  
Old 12-23-2006, 11:11 AM
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Default Re: My Oven/BBQ

I wanted it to sweep back and up from the middle of the dome.
If I use metal flex vent pipe and cover it in mud,
Then I can use a round brush on like a flexible snake.
Do you think that will work? And how much cleaning do you have to do?
Is it as bad as or worse than a fireplace chimney?
How long after the insulation is on, can I start the first fire?
Wanting to start Christmas day.
Thanks.
Leep.
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  #29  
Old 12-24-2006, 08:56 AM
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Default Re: My Oven/BBQ

Hi, my thoughts having recently gone through this.

There is a helpful thread on curing here:

http://www.fornobravo.com/forum/f16/...uring-767.html (Oven Curing)

But in short, if you finished your dome on the 20th, cooking on Christmas day is out. You COULD light your first curing fire, but everything I've read recommends at least a week of curing before doing that. Low outdooor temperatures would extend that curing time. I waited a week in fairly moderate November northern California temperatures.

Don't insulate before your curing fires unless it's temporarily with an insulation blanket. Cracks are likely to develop in your cladding, and you want the opportunity to seal them before applying the insulation.

If you are going to insulate with perlcrete/vermiculite concrete, then either cure first, or apply the insulating layer(s) and wait 7 days minimum for them to cure as well. Perlite and Vermiculite soak up water, so that mix takes a long time to dry out.

Pizza for NY Eve is compelling, I know. If it were me, I'd not insulate, and starting about the 26th I'd run two curing fires a day till NY. You can light a curing fire in the AM, let it go out, let the dome cool, then light another in the late afternoon. Progressively hotter, like in the instructions.

Flex pipe doesn't sound like a great idea for chimney to me, seems like from the pics 1 straight piece to the dome tip, 1 angle and straight up would achieve nearly the same thing. Flex pipe would be harder to keep clean.

good luck!
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  #30  
Old 12-25-2006, 08:57 AM
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Default Re: My Oven/BBQ

Quote:
Originally Posted by Leepinla View Post
I wanted it to sweep back and up from the middle of the dome.
If I use metal flex vent pipe and cover it in mud,
Then I can use a round brush on like a flexible snake.
Do you think that will work? And how much cleaning do you have to do?
Is it as bad as or worse than a fireplace chimney?
I have a rectangular terra cotta chimney that I have so far not needed to clean, although I've only had my oven operational for about four months. I agree with JC that flex metal pipe is not ideal. The gases from the oven are quite hot with almost no particulate once it's up to temp, but as you are bringing it up to heat you do release soot and creosote, so not as bad as a fireplace chimney.
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