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  #11  
Old 05-23-2012, 05:12 PM
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Default Re: 42" FB Pompeii Oven with 19" dome, and adjacent fireplace, in the O.C.

Quote:
Originally Posted by zdziandy View Post
I'll be reading this thread with interest as i am very much a novice and just starting on a similar project 42" Pompeii Oven with the "High Vault" which they describe as 18" inside height so I assume that is the dome height. Only in the base building stage so still some time away from getting into the dome but I am preparing for it!! Pardon my ignorance but what is meant by "IT". I also assume that once the dome is complete the plywood dome form can easily come out through the entrance. I look forward to further tips and thank you.
Welcome! You are definitely in the right place for info. If you've started on your build, please start a thread and share! Pictures pictures pictures!

IT = "Indispensible Tool". Do a search for it, but basically it is an arm mounted in the center of the dome that lets you check the bricks for angle and distance from center as you install them. The catch is, it only works well if you are building a perfect half sphere

Vault - I would call an 18" dome height in a 42" oven a low dome oven (versus a sphere as referred to above, which would have a 21" dome height). You'll definitely need some sort of form for that

Getting the form out of the oven - yes, as long as your door about the same width as your form is tall - which it generally would be. But you can always burn it if you have a problem!
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  #12  
Old 05-23-2012, 06:25 PM
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Default Re: 42" FB Pompeii Oven with 19" dome, and adjacent fireplace, in the O.C.

About the IT: I did not adjust if myself, stayed with the sphere. However, I do believe that if you really want to lower the dome using the IT, an adjustable IT would be the route to go. I had planned to lower mine but, decided to leave well enough alone as I got into it .
I used a large turnbuckle.

My plan was to wait until I cleared the inner arch before beginning the adjustments. (My inner arch and it's protrusion into the dome was guaged to the IT @44") In my case I did not think there were enough rows left after clearing the arch to get to a low ceiling heighth.
Someone with some experince with marrying the low dome with the inner arch may can help but, I think that an adjustable IT would be the Key.
Just Sayin'
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  #13  
Old 05-23-2012, 11:10 PM
dvm dvm is offline
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Default Re: 42" FB Pompeii Oven with 19" dome, and adjacent fireplace, in the O.C.

zdziandy
Welcome to the forums. I have been reading them for months and I discovered that IT refers to an Indispensable Tool. You can search the forums and find several threads describing variations on the "IT" with photos and instructions for construction. Like here http://www.fornobravo.com/forum/f28/...heme-2985.html (My indispensible tool (a variation on a FB theme))
If you were making a 42 inch diameter oven (with a floor radius of 21 inches) and a "High Dome" (with a height of 21 inches) the IT could pivot from the center of the floor and align the bricks for each row in the dome. Deejayoh and I are discussing a means to modify the "IT" for a low dome application - the catch is that with a 42 inch diameter and a low dome (in my case 19 inch - though 15.5 inch has been described!) a simple radius will not work.

Last edited by dvm; 05-24-2012 at 12:33 AM. Reason: add link
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Old 05-23-2012, 11:15 PM
dvm dvm is offline
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Default Re: 42" FB Pompeii Oven with 19" dome, and adjacent fireplace, in the O.C.

DeeJayOh
AhhHaa I see what you mean. Thanks for the sketch-up diagram. I was also interested to hear that you don't think that a Clamp is needed to hold the brick in place with the IT. I have not place one brick yet... But I expected that securing the interior face of the brick at the desired angle and holding it there would be difficult and achieved by rigidly clamping with the IT.

Last edited by dvm; 05-24-2012 at 12:34 AM.
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  #15  
Old 05-23-2012, 11:25 PM
dvm dvm is offline
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Default Re: 42" FB Pompeii Oven with 19" dome, and adjacent fireplace, in the O.C.

brianventura
I like the simplicity (function!) of the plywood template. Aside from having the bricks touch the wooded guide, was it difficult (necessary?) to determine the angle of the "oven" face of each row of brick - I am trying to understand if the "clamp to the desired angle" feature of the IT is and important feature lost using your method. Forgive me if this is a dumb question - I have not yet placed one brick. (But I will be building my stand this long weekend).
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  #16  
Old 05-24-2012, 07:58 AM
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Default Re: 42" FB Pompeii Oven with 19" dome, and adjacent fireplace, in the O.C.

One advantage of a low dome oven is the fact that you can built you soldier the same height as your door. At that point tying the two together at the top is as simple as bevel ing the angles to match.

On the flip side I would not personally consider 18" to be a low dome oven, and using my method would not work well due to the taller door.

Just thought I would chime is since I have built two low dome ovens and can give a good amount Of guidance on them that others cannot.
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  #17  
Old 05-26-2012, 10:42 PM
dvm dvm is offline
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Default Re: 42" FB Pompeii Oven with 19" dome, and adjacent fireplace, in the O.C.

Blockwork begins The entire structure includes the pizza oven base, an adjacent fireplace, a inserted gas grill, with side counters and small fridge, and a pony wall for seating.
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  #18  
Old 05-28-2012, 08:04 AM
dvm dvm is offline
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Default Re: 42" FB Pompeii Oven with 19" dome, and adjacent fireplace, in the O.C.

Great to have a three day weekend to kick off this project. In addition to remembering and being thankful for the men and women who serve and have served, I am making decent progress on my project!
An observation on elevation. My 6 inch foundation is 4 inches above the patio pavers, 5 courses of blocks will be (about) 40 inches high (using mortar), top of the stand 4 inches, Insulation board 2 inches, floor 1.25" for splits and + 2" for tiles
I get 53.25 inches to the cooking floor and 64.75 inches to the top of the arch. I am 6'2" inches tall and prefer not to stoop when I work, however - will this oven be too tall?
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  #19  
Old 05-28-2012, 08:50 AM
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Default Re: 42" FB Pompeii Oven with 19" dome, and adjacent fireplace, in the O.C.

dvm,
Good-looking start to your oven. Final floor height is usually slightly higher than elbow height with your arms hanging straight down and your forearm held parallel to the floor.

I used a plywood dome template rather than an IT. With the template in place, it was easy to butter a brick and push it into place so that the face barely touched the curve of the template. You really only have to use the template every 4th of 5th brick to stay in round.

Looking forward to seeing your build. Where in OC are you?

John
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  #20  
Old 05-28-2012, 10:49 PM
dvm dvm is offline
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Default Re: 42" FB Pompeii Oven with 19" dome, and adjacent fireplace, in the O.C.

Hi John
My sons and I made some great progress this weekend.

dvm

Last edited by dvm; 05-30-2012 at 07:05 AM.
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