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I decided to get at it early before it rains. I only had 4 4-CuFt bags of perlite and it filled the house about halfway. I left it mounded over the oven so I could burn today.
Then I finished off the stucco.
And lit the fire!
I am burning through the small limbs of those trees I have, so I figure I will burn this fire all day and keep it around 5-700 degrees until I am ready to cook.
I knocked out 9 pizzas, 2 of which were calzones, 1 was ashed and the rest were good. The oven was running 950+ on the roof and from 850 to 700 down the walls and back with the floor at 500+. It didn't hold very long though, maybe an hour. I blocked the entrance with AAC rubble, see what it is in the morning.
Yeah, I had a similar experience this week. 48 hours and 220 interior air temperature (door thermometer). That's without the last layer of insulation, although I did leave a fat bed of coals in the whole time.
For the inner part of the core, I used 1-4 homebrew to perlite. This is 2-1/4" thick.
For the outer part of the core, I did 1-1 homebrew to perlite, 3/4" thick. I used tuckpointing trowels for the handles, my confidence level is not high on them. Start to finish 1 hour of work, several weeks of thinking about it.
After it sets and I trim it to fit, it will be cut in half. I will then coat it with a thin layer of modified thinset for a skin.
Last edited by Tscarborough; 03-12-2010, 05:31 PM.
Good luck. My experiments using similar materials didn't last. It cracked and fell apart. But mine was way thinner than yours-only 1" thick panel screwed into a timber door. Every time I made a panel that was insulating enough it was too weak and every time I made it strong enough it did not insulate well. The traditional method was to soak a timber door in water, although this also has its drawbacks. A steel door, being a good conductor will do a good job of sucking heat out of the oven, is unsafe to handle (ouch that's hot) although it won't burn.
I think the door is the WFO Achilles heel.
I did cook some pies last night, made 8 doughs, cooked six pizzas along with the spinach cannoli friends brought. Only one rolled into a calzone, too much sauce, too much time on the plate, and too many ingredients, now the good Doctor knows.
My bricklayer, AKA Dr. Feelgood:
With a dubious but loud bunch of groupies,
We worked our way through several pies.
We made a traditional Margahrita, and then used various combinations of pepperoni, red onion, baby portabellos, tomatos, garlic, and jalapenos. For cheese, I had some fresh Moz, and some fresh Oxaca. I preferred the Oxaca, esp. when I added a little parmesan .
The heat profile was 6pm 300, 7pm 8-900, end of cooking 6-800. This morning at 9am it was 4-500, and 5pm this afternoon it is 220ish.
Where do you think you are losing your heat? I was under the impression that a vault style oven had better retention then the Pompeii's. Did you have the door open for a while before it was closed?
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