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Jakers 07-20-2009 04:16 PM

jakers new to the forum
I'm new to the forum because I'm building my own FB pizza oven and I might need some help.

my first question is how do I build the form out of styrofoam for the dome?

Neil2 07-20-2009 05:30 PM

Re: jakers new to the forum
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Buy a sheet of the cheapest 1/2 inch thick Styrofoam you can find.

Make a cardboard template of a cross section of your dome. I recommend an elliptical dome with the height being 90% of the radius.

Use the template to trace out a section of the foam. Once your ring of soldier bricks is in place, stand this piece in the oven. The soldier bricks will help it stand.

Fold template in half and fold back the resulting edge 1 inch or so.

Use this to mark and cut "leaves" and stand in the oven, again using the soldier brick ring as a guide. Continue on, placing leaves in a ring at 1/8 points or so, or until you run out of Styrofoam.

I cut a 4 inch hole in each leaf to facilitate curing and ventilation during construction.

See photo:

Jakers 07-20-2009 08:18 PM

Re: jakers new to the forum
Thank you very much, it sounds very simple after you explained it.

Rodneyf 07-23-2009 05:16 AM

Re: jakers new to the forum
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I went with no forms and found it quite easy as log as you have time to wait for each brick to set harh enough to set the next. If you have a length of wood measured to the right lenght and use this for the whole build, your oven will be just fine and you can clean as you go. have fun building and take your time.:D

Jakers 07-26-2009 10:25 AM

Re: jakers new to the forum
Thank you for the reply , how long do you have to hold up each brick? I mean can you do a whole row of bricks in one day or two? And do you hold the brick up with a stick or is it a measuring device?

Thank You

Gromit 07-26-2009 10:49 AM

Re: jakers new to the forum

I used Refmix, and even on the last course I only needed to wait about 60 seconds on each brick before moving my guide/support. Once the refmix hits brick (even soaked brick), the water seems to just drain away.

I used the 3:1:1:1 homebrew mortar for my transition to the chimney. It seemed to be more slippery and plasticy than the Refmix. (Consequently, it spread easier to my surprise.) I have a feeling the homebrew on the dome would have required more "support time" on each brick.

Jakers 07-26-2009 01:46 PM

Re: jakers new to the forum

I like your rotating brick support do you have any pictures of how that was built?


Gromit 07-26-2009 06:26 PM

Re: jakers new to the forum

My 2nd post in my build thread shows the best picture I have of the rotating vane. It worked, but was a bit troublesome. The spinning disk would freeze up due to changes in humidity and due to soaking up some water from clean-up operations. If I had to do it again, I would put a pin in the bottom of the vane that would fit into a hole in the center of the disk. A drill bit would work as the pin; just drill in and leave the bit. That way only the vane would rotate and not the entire disk.

Rodneyf 07-27-2009 12:35 AM

Re: jakers new to the forum
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Thre are lots of ways to hold the bricks and the time each one takes depends a lot on the mortar and the weather. I don't like wasting time or money so I just used scrap timber held with clamps as adjustable supports. It doesn't much matter what you use on the way, only that you enjoy your build and get the dome as round as you can. I am really happy with the way my dome has turned up and I am nearly finished my entry now so it is getting close to having a fire. :D

ThisOldGarageNJ 07-27-2009 04:24 AM

Re: jakers new to the forum
i used a plywood form, worked very well, Burned it out after... Good luck on your choice and welcome to a new addicition >>>>>

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