4 Clay BodyIt is possible to work with the clay as it comes from the earth, however it will not posses certain characteristics such as color, plasticity, strength, or fired density. By mixing two or more clays and adding other materials, these effects can be produced in what is called a clay body.
5 Pinch PotTo make a pinch pot begin with a ball of clay. Push your thumb into the center, and then pinch up the walls. Turn the piece as you pinch. This will help you keep the walls of the piece at an even thickness. Lightly push the bottom of the pot on a flat surface to create a flat spot that it will rest on when finished.
9 BatA disk or slab of plaster or other material such as wood used for drying clay for supporting clay forms while being worked
10 KilnKilns are thermally insulated chambers, or ovens, in which controlled temperature regimes are produced. They are used to harden the clay body.
11 Kiln continued…Kilns can be electric, natural gas, wood, coal, fuel oil or propane. Materials used to heat the kiln can affect the work: wood ash can build up on the surfaces of a piece and form a glaze at high temperatures. Some potters introduce chemicals into the kiln to influence the effects of the firing. Note: we use electric kilns
16 Coil PotsMade from ropes or coils of clay. Layered one upon another to create the walls of the pot. Smooth coils or leave some coils exposed.
17 ScoringScoring clay is the method potters use to adhere two pieces of clay together. Simply use any pointed clay tool to make X shaped marks into the clay where you will be adhering another piece. This roughs up the surface area of the clay, which is needed for a good adhesion.
22 SgraffitoSgraffito. This is a decorating technique where a colored slip is applied to a leather-hard piece of clay and left to dry. Once the slip is dry a variety of different tools are used to carve into the clay to remove the slip and leave an embedded decoration behind.
28 RakuPottery is fired normally but removed when it is red hot and the glaze is molten. It is then usually placed in a bed of combustible materials and covered, creating intense reduction resulting in irregular surfaces and colors.
30 Slab BuildingClay slabs are cut to shape and joined together using scoring and wet clay called slip. Slabs can be draped over or into forms, rolled around cylinders or built-up into geometric forms. Large forms are difficult because of stresses on the seams and because the slab naturally sags. Some potters get around this by working fibers into the clay body. The fibers burn out during the firing, leaving a network of tiny holes.
51 Pyrometric ConeA small triangular pyramid made of ceramic materials that are compounded to bend and melt at specific temperatures. The cone serves as a time- temperature indicator of heat work in the kiln.
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