I've seen a Korean show were they built a hut (large enough to walk in) out of cinder blocks and mud. They then put all the pots, bowls, plates, etc in the hut on shelves (like cider block steps). Close the entrance with more cinder blocks and mud, leaving a small opening for the fire (like a fireplace). Then they start the fire and tend it for hours, feeding more wood. The next day, they tear down the entrance and remove the fired pieces.
There had to be some other hole or opening on the other side to create a hot fire, like a backdraft.
This was like a family business in the countryside of Korea. The real interesting part was they used clay from thier own land to make the pottery. It was neat watching them dig the clay up, wash it (to remove any soil) and then work the clay.
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