Presentations text content in CERAMICS What is Ceramics?
What is Ceramics?
Pottery or clay sculpture fired at high temperatures in a kiln to make them harder and stronger
Ceramics Around the World
Ceramics have been used, throughout the world, for tens of thousands of years.
Archeologists have uncovered human-made ceramics in the form of animal and human figurines that date back to at least 24,000 BC.Slide4
Examples of African and
Middle Eastern Ceramics
Examples of Asian Ceramics
China – Ming Dynasty
Terra Cotta Warriors
Examples of North and
South American Ceramics
United States (Native American Pueblo)Slide7
Examples of European Ceramics
Examples of Contemporary CeramicsSlide9
Examples of Contemporary CeramicsSlide10
Kiln: a specially designed oven capable of reaching temperatures over 2000° F (can be electric, gas, or wood-fired)
Clay: moist, sticky dirt (mud) composed of fine-grained minerals, which can be shaped when wet and hardened when dried or heated
: mainly used to shape claySlide11
Common Types of Clay
: clay fired at relatively low temperatures (1800°F-2100°F), often contains iron and has a porous surface when fired
Stoneware: a buff, gray or brown clay which is heavy, opaque, and highly plastic in nature with a high firing temperature (2200°F-2400°F)
: a very fine white clay with a high firing temperature (2200°F-2550°F), is non-porous, strong, and translucent when firedSlide12
Tools, Tools, Tools….
wire clay cutter
Clay Shaping Methods
Slip CastingHand BuildingSlide14
Slip Cast CeramicsSlide15
Coil ConstructionSlab ConstructionSlide16
Pinching is a pottery technique fundamental to manipulating clay. Making a pinch pot consists of
pressing the thumb into a ball of clay, and drawing the clay out into a pot by repeatedly squeezing the clay between the thumb and fingers.Slide17
Coils are long, snake-like ropes of clay that are used in making pottery. It involves building the walls of a form with a series of coils into the required shape. The surface can either remain coil-textured or they can be smoothed
How to make a coil potSlide20
Some advanced coil ceramicsSlide22Slide23Slide24Slide25Slide26
Stages of Clay
: soft/plastic clay
Leather hard (greenware): clay is dry enough to
maintain form and wet enough to be smoothed, carved, and added to
Bone dry (greenware
): clay has dried as much as possible before first firing and is extremely brittle
Bisque: first firing where all remaining water molecules are released from the clay transforming it into ceramic (Why are air bubbles dangerous during a bisque fire?)
Glazed: second firing where glaze has melted into the ceramic surface making it non-porousSlide27
Hazards of clay dust:
Silica particles = extremely tiny pieces of glass, which became airborne and easily inhaled….extremely hazardous to lungsSolution:
WET clean-up prevents dust from building up and becoming airborneUse wet sponges, spray bottles, wet paper towelSlide28
So what we are doing today…
I will demo how to start to make a coil pot.
We will then use some time to experiment with the material of clay and get used to using it.