He mahi tēnei hei whakakore i ngā mirumiru hau o roto i tētahi kerengeo. Ka rōrangia, ka pēpēhia, ka romiromia te uku kia puta katoa ai te hau o roto. He mea nui te whakakore i ngā mirumiru hau kia kore ai te uku e pahū i rō umuuku.
The action to get rid of the air bubbles in a lump of clay. It is rolled, pushed and kneaded so all of the air is expelled. Expelling the air is important to ensure the clay does not explode in the kiln.