Bend, Oregon USA 29" interior Floor

[100million]

Well I am starting my Thread with the Masters of Pizza Ovens that have completed ovens

I am a rookie and never built a oven but I am stepping in the mud....with my friend and Master Brick layer Serigo................

This is our First Outdoor Kitchen with a Modular Refractory Oven Installation

http://www.fornobravo.com/forum/f35/...gon-11041.html


We have studied all of the greatest builders and came up with a few ideas of our own. I know we could do better but did not have enough money to fly all you great builders out to Bend, Oregon

We are going to try to make this structurely sound so it will not fall apart....I will explain some of my structurely items to all if asked

Here is my oven

29" floor
14" Dome Height
7.75" Door Height
18" Door Width

( I left some of my measurements at the warehouse, So I will fill them in and edit this post tomorrow)

We are using Fire brick
Mortar is 2 #30 silica sand 1 1/2 fire clay 1 portland cement 1 lime...Poor mans Mix

Floor is vermiculite 8 to 1

8" Chimney

We built it in a 42 by 50 inch frame made out of 3 x 3 inch angle iron with 3 in flat stock as supports under the oven.......

[100million]

Re: Bend, Oregon USA 29" interior Floor

Well I just put in my Keystone in the top of the dome.

I am going to apply some 16 gauge chicken fencing to strengthen the dome and enclosure ( this should at like rebar to keep the cracking to a minimal and the brick seperating at the joints ) then I am going to put a skin coat just covering the 16 gauge wire.

What I want to know how long should i let it dry after this step before I start the first fire?

I will post more pictures tomorrow of what it looks like.

Any ideas is always nice to hear from the master builders.


Thanks

Chris

[gdest]

Re: Bend, Oregon USA 29" interior Floor

Not a master builder yet, I just finished digging my foundation. However, I was wondering why you did not include a reveal for a door? Do you plan on using your oven for pizza's only and not for any other baking?

[100million]

Re: Bend, Oregon USA 29" interior Floor

Mr Gdest

I plan to use it for pizza only and if i was going to make bread or something i will make a door that slides in. But I only make pizza with it and if you look at my measurements you will see that the opening is not that tall

Chris

[100million]

Re: Bend, Oregon USA 29" interior Floor

Ok

Here is where I am at...

I have add more pictures for all to see

I have add the 16 gauge chicken fence to add structure to the oven
I am going to add a thin layer of Poormans high temp mortar to cover up the chicken wire
Then I am going to add 2 " of ceramic blanket then Alum wrap then chicken wire.
Then I am going to cover it with a stucco coat


Does anyone of the master builders or WFO freinds have any ideas?

Chris

[Wiley]

Re: Bend, Oregon USA 29" interior Floor

Chris,
Looks good! I have a question is there a reason you located the tension cable at the bottom of the soldier course? I would have thought it would have gone at the top. Your WFO is the first I have seen with such a tension cable although you are obviously aware that large domes (not WFOs) have such a tension device usually a chain. It will be interesting to see if there is any problems relating to differential expansion of the cable when it is heated.

Also it appears the entire WFO is constructed on a large plate of steel, is that correct? Looks like you have built the WFO so a forklift can easily transport the finished oven. Do you anticipate any issue with heat transfer thru the eyebolts?

I'm impressed with your construction. Your question regarding how long to wait before the first fire seems to be going unanswered. I would think that a search of the forum would yield something, I know it has been asked before.

Bests,
Wiley

[100million]

Re: Bend, Oregon USA 29" interior Floor

Chris,
Looks good! I have a question is there a reason you located the tension cable at the bottom of the soldier course? I would have thought it would have gone at the top. Your WFO is the first I have seen with such a tension cable although you are obviously aware that large domes (not WFOs) have such a tension device usually a chain. It will be interesting to see if there is any problems relating to differential expansion of the cable when it is heated.

1. I made the cable system because....I am building the oven structural sound. This is becasue of portability. That is way I have a 16 gauge wire mesh acting as rebar. This is to help all the brick to not seperate.

2. I dont see a problem with heat transfered becasue metal expands when heated

Also it appears the entire WFO is constructed on a large plate of steel, is that correct? Looks like you have built the WFO so a forklift can easily transport the finished oven. Do you anticipate any issue with heat transfer thru the eyebolts?

1. I dont see a problem on melting or heat transfer. Because when metal gets hot it expands
Most steel has other metals added to tune its properties, like strength, corrosion resistance, or ease of fabrication. Steel is just the element iron that has been processed to control the amount of carbon. Iron, out of the ground, melts at around 1510 degrees C (2750?F). Steel often melts at around 1370 degrees C (2500?F).
2. Yes it is made in my warehouse on pallets so my forklift can pick it up ( it is warm in side )

I'm impressed with your construction. Your question regarding how long to wait before the first fire seems to be going unanswered. I would think that a search of the forum would yield something, I know it has been asked before.

Bests,
Wiley

If you have any other questions ...feel free to ask

If all goes well this will be the FIRST WFO of its kind

Chris

[shuboyje]

Re: Bend, Oregon USA 29" interior Floor

Your oven is very similar to mine. I built a 30 inch, I've got a lower dome and a higher soldier course, but it is pretty similar. I also abutted my dome with stainless cable, but I did three wraps around top, middle, and bottom of the soldier course all anchored to a welded angle iron door frame. I haven't had any problem with the metal, the difference of expansion does not seem to be an issue nor does heat transfer. I also built my own so it can be picked up by a fork lift, although that will never happen. Why? Cause it is too small!!!! I love it and it serves it's purpose fine and cooks a mean pie, but I long for a much bigger oven, managing things in this one are just more of a pain then they need to be due to size. Hopefully the things that bother me don't bother you so your work on making it movable are not a waste.

[100million]

Re: Bend, Oregon USA 29" interior Floor

Your oven is very similar to mine. I built a 30 inch, I've got a lower dome and a higher soldier course, but it is pretty similar. I also abutted my dome with stainless cable, but I did three wraps around top, middle, and bottom of the soldier course all anchored to a welded angle iron door frame. I haven't had any problem with the metal, the difference of expansion does not seem to be an issue nor does heat transfer. I also built my own so it can be picked up by a fork lift, although that will never happen. Why? Cause it is too small!!!! I love it and it serves it's purpose fine and cooks a mean pie, but I long for a much bigger oven, managing things in this one are just more of a pain then they need to be due to size. Hopefully the things that bother me don't bother you so your work on making it movable are not a waste.

Can you send some pictures of your project to completion?

[100million]

Re: Bend, Oregon USA 29" interior Floor

Well

We are on to the next stage

I skim coated the wire mesh and let dry for 5 days.

I hooked up a propane burner to cure the Oven

We are going to follow the direction but do this with propane.

Day 1. Maintain a fire temperature of 300?F throughout the
day and as long as possible into the evening. If you cannot
continually run a 300?F for at least six hours, repeat step 1
for a second day before moving on to Day 2.
Day 2. Repeat at 350?F.
Important Note. While it is difficult to maintain consistent,
low temperature fires, it is critical for proper curing that you
do not go above these temperatures during the first two
days, or a total of 16 hours.
Day 3. Repeat at 400?F.
Day 4. Repeat at 450?F.
Day 5. Repeat at 500?F.
Close the oven door every evening to preserve dryness and
heat.

After Day 5 we are going to fill any cracks ( knock on wood ) then 2-3 inch of ceramic blankets, then alum foil then chicken wire and then recoat with about 1 inch or mortar then slick it with smooth stucco then waterproof it

IF anyone has any ideas I would love to hear from you

Thanks all for all the help so far

Chris

[Les]

Re: Bend, Oregon USA 29" interior Floor

Looks great Chris. I recommend using Dryvit for the stucco. It's an acrylic base and it is water proof. It also comes in any color you want.

Les...

[100million]

Re: Bend, Oregon USA 29" interior Floor

Well 2nd day curing oven
8 hours each day
At the end of the day these are the temps

Outside of skim coat 135 F
Ceiling inside 345 F
Side walls 225 F
Floor 185 F

Should I Move on the the 400F Tomorrow????? for 8 more hours?

[100million]

Re: Bend, Oregon USA 29" interior Floor

Well another day heating and curing the oven

Floor 285
Walls 363
Ceiling 428
Outside 164

Everything looks find so far

I think I will be installing the Ceramic Blanket chicken wire and skim coat Saturday

I will like you all know what it looks like with more pictures to follow

Thanks

Chris

Still waiting for some of the old timer to tell me the pro's and con's of my oven

[dmun]

Re: Bend, Oregon USA 29" interior Floor

Still waiting for some of the old timer to tell me the pro's and con's of my oven

The only thing I would do differently is to make a larger flue transition, to prevent smoke coming out the front on startup. Having a hole in your entry the same size as your flue isn't the best, but once the fire is going strong it should draw fine.

Good looking build.

[100million]

Re: Bend, Oregon USA 29" interior Floor

The only thing I would do differently is to make a larger flue transition, to prevent smoke coming out the front on startup. Having a hole in your entry the same size as your flue isn't the best, but once the fire is going strong it should draw fine.

Good looking build.

I have a 6 by 9 flue and 6 inch interior chimney....What should i have?

Thanks for your comment Dmun I am learning and want to know more ....So any comment is appreciated....

Chris