we dug out clay from our garden which justified my thinking about getting rid of the veg patch and building this oven ,the soil was so clay rich- we followed the books instructions and put a sample in a bottle of water gave it a good shake and within 20 mins we could see it was mostly clay and knew we had to add a lot of sand .
we placed wet newspaper over the wicker frame to give the first layer something even to dry against
1st stage : at a mix of abour 20% clay to 80% sand we stamped out the first layers mix and made small bricks which we build round the wicker dome giving us the first layer about 3 inches thick .This fist layer as shown in the picture sits just within the firebrick base
2nd stage : We then added 1/2 a bale of hay to more 80/20 mix the same as detailed above ,it was harder work mixing this in and took a whole afternoon ,we left it rolled up for a night before making more brick shapes and added this as a 2nd layer the next day probably 4 inches thick which covered the firebrick base -
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