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-   -   Clay sand ratio for cob oven (http://www.fornobravo.com/forum/f43/clay-sand-ratio-cob-oven-16829.html)

Lake lover 10-10-2011 12:15 PM

Clay sand ratio for cob oven
 
Hi all
I can't seem to find a sand to clay ration for a cob oven.

I have some clay recommended for WFO.s from a local clay producer.

I have access to sharp masons sand. Planning a 40 inch wide dome oven.

I poured the supporting base yesterday.

It will have to sit for a while as it cool outside.

Fire brick is bought for the floor, and flue liner.

Thanks all

david s 10-10-2011 12:50 PM

Re: Clay sand ratio for cob oven
 
Don't forget to insulate between the supporting slab and the oven floor.
I think the sand, clay proportion is about 50/50 and usually chopped straw is added to the mix to add reinforcing.

Lake lover 10-22-2011 09:18 AM

Re: Clay sand ratio for cob oven
 
Perlite is in place.


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