Making pottery involves several steps. When Ken demonstrates throwing a pot on the wheel, people think it is finished. Once when we counted all the times Ken handles the clay from a lump to going out the pottery as someone's purchase, we realized it can be a dozen to thirty times (think teapot - pot, spout, handle, lid, etc).
Ken has been trimming the bottoms of pots and tops of the lids. The part that was on the wheel is rough and needs to be smoothed out.
Ken waits until the pot is leather hard so that it doesn't mush or collapse when he trims it.
Then he puts on handles and knobs on lids. Then he puts the pottery under a sheet of plastic so the pieces dry evenly