Turning.
Fig. 14. Turning a vase
After a piece has been thrown on the wheel, it has assumed its general shape, but that is all. The thinning of the walls, the refinements of foot and lip, all such finishing touches must be reserved for the next process. This is known among modern potters as “turning.” In this the clay is no longer in a wet state, but in a “leather-hard” condition, and it is not worked with the hands but with steel cutting tools. A newly shaped vase becomes leather hard after it has been kept in the air and the water allowed to evaporate for about twenty-four hours. Pieces in this state are hard enough to be handled with care and to be cut easily with a knife. They are not so fragile as either in the wet or in the “bone-dry” state, but they are still delicate and exposed to many dangers. Not until a vase has been fired is it safe to handle it freely. The cutting with the steel tools is done on the wheel (or “jigger”[7]), the right hand which grasps the tool being kept steady by letting it rest on a stick held in the left hand; the stick should have a sharpened nail on one end, the point of which is pressed into a wooden board at the height required (fig. [14]). By continued cutting off of thin shavings of clay and by adding more clay in slip form when more is needed, the final outline of the shape and the various grooves and mouldings for lip and foot can be obtained. But it is a slow process, requiring time, care, and great patience. For the smoothing of the surface, scrapers, sandpaper, and sponge are useful.
Fig. 15. Turned foot
Met. Mus. Acc. No. 12.234.2
Fig. 16. Foot left as thrown