[Cob] , a cleaner cob oven for the future - please share details

[Barbara Roemer]

Ray,

I'm with Bill - I have questions the diagram doesn't answer.  Do you sell
plans or share them?  Could you answer the following questions on the
listserv?  You might find people willing to build if they had sufficient
information - I would be and I bet Bill would, too!

1. Where is brick used?  Is it firebrick or regular construction brick?

2. It looks from the drawing as though the layer of cob surrounding the
stainless baking chamber is cob and brick - how are you using the brick and
what are you doing with the cob?  Is the cob mortaring laid up brick?  Brick
and cob have different expansion rates.  If you use them together, how do
you account for cob's propensity to take on atmospheric moisture?

2. How do you maintain 2" space around the stainless igloo as you are
building the surrounding cob?

3. Are the blue lines and circles some kind of water heating system?  More
info please???

4.  What is the teardrop?  How is it held there, what is it formed from
(looks like it must be spun, but knowing you use a lot of recycled material,
I doubt it's a custom fabrication job) ?  What is its purpose?  How do you
fill it?  What is the chevron referred to in the drawing near the teardrop?

Thanks!

Barbara Roemer
Sierra Foothills