Preforming on leather hard clay in Phù Mỹ village, step 4 and surface treatment for cooking pots (trà)

The cooking pots have been drying for one day. They are now strong enough to be stacked up without being distorted. Nguyễn Tấn Ánh places as much as he can beside him. He then places one pot on his flexed foot with the opening facing left. He places his left hand on the inside, while his right hand scrapes the outside, using the bamboo tool (cái khót). When the bottom has a nice round shape, Nguyễn Tấn Ánh exchange is tool for a rectangular piece of plastic and rubs it on the outside of the pot. This action compresses the clay, closing most of the irregularities and creating a smooth, slightly glossy surface. He then turns the pot around and uses a circular piece of plastic on the inside of the pot.