i finished the earth oven to the insulation layer a week ago, and had the first "dry firing" this weekend.

i've fired it twice to try and dry the insulation layer and track the fuel and heat usage, although i won't get accurate estimates on this until i'm sure the entire oven is dry, at least a few weeks from now.

on saturday, i fired it and made pizza. because of some bad scheduling on my part, i was unable to have any bread ready to bake in it, although we did use the tail end of the heat for potatoes and roasted garlic.

i'll fire it and bake bread this week, hopefully tuesday.

here are some photos:

here i am getting the fire started and losing some eyebrows:

here is the fire once it got going. after the fire got some momentum, it became a lot easier to keep it alive - wood placed in the oven would instantly burst into flames instead of needing to be coaxed. at this point, my infrared thermometer (which reads up to about 1000 degrees F) was off the charts:

the tongue of smoke. smoke means an inefficient fire. efficient firing and use of fuel is a very challenging part of this oven:

another view of the fire:

the infrared thermometer. its max is around 1000 degrees:

the themometer. a very fun tool:

here i am rolling out the pizza. i like the flat crust, so i use a rolling pin (blasphemy, i know):

the pizzas. porcini, homemade sausage and onion; and goat cheese and braised leeks. the sauce and crust are adapted from reinhart's american pie:

i'm experimenting with sizes to see how i can best maximize the floor space: 

cooking:

my father-in-law wielding the oven door, several 4x4's joined by countersinked (countersunk?) screws, joined to a 1x12 sleeve and mounted with two concrete float replacement handles:

with the door in place:

the finished product:

more to follow once i finally get some bread in there...

with the help of my dad and sister, i finished the insulation layer on the oven. the only thing left to do now is a plaster layer - which won't affect the performance. that means baking can begin as soon as this layer is dry enough.

before we applied the final layer, though, i ran a cook of four pizzas.

we gobbled the pizzas after they came out, so this is the only "cooking" photo.  i used parchment paper because i don't have all the oven tools yet, and couldn't clean out the ash.  my sister is fabricating most of them for me (she is an artist and metalsmith), so i should have all i need soon, well under my $200 budget:

a few days later we put on the insulation layer, a 5 inch thick layer of mud, sand and straw.

here we are mixing:

here's the final layer. we were all covered in mud with no one to take pics of the process, so i only have a photo of the end result:

i'm going to build the door this week, and with the weather as hot as it has been, it should be ready to bake by friday.

wish me luck, and thanks for all your support.

Continued from an earlier entry....

We let the first layer dry a few days, and some fairly big cracks started to form. I decided to pull out the sand to give the oven more room to shrink as needed, and to help it dry out faster. I cut a smaller door than the final size, you can see the final door scored into the surface:

I finally got up the gumption to move my construction photos over to my flickr account. Here they are in the entirety, I tried to make the titles fairly self-explanatory:

http://www.flickr.com/gp/7541655@N03/aX31kR

Here's a condensed version with some commentary:

First off is the foundation. Our frost line in in theory 48 inches, so we dug down quite a bit. We hit a VERY large rock, which made us decide the hole was big enough, and which we figured would act as a foundation in itself.

I am going to have to stop reading this blog during the day time while I am at work.  It is very difficult to maintain a proper decorum while I am rolling on the floor laughing!

Old Camp Cook 

I found this on another list and thought there may be some here who would be interested to know that Kiko Denzer and Hannah Field are on tour promoting their simple designs for earth oven building and naturally leavened breads. The schedule is as follows: