Intro. ceramics powerpoint

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Intro. ceramics powerpoint

  1. 1. Ceramics Creating Pinch Pots
  2. 2. Clay  Made from earth, water and fire.  Clay is different from mud, since it has plasticity. This gives it the ability to hold together while its being shaped.
  3. 3. Basic Terms  Ceramics – Clay objects that permanently retain their shape after they have been heated to specific temperatures.  Pottery – Functional Ware, such as vases, pots, bowls or plates, shaped from moist clay and hardened by heat.
  4. 4. Basic Terms cont.  Wedge – A way of improving the workability of clay by reforming the mixture to make it homogeneous and even in texture while eliminating air bubbles.
  5. 5. Basic Terms cont.  Kiln – A structure built to fire clay at high temperatures.
  6. 6.  Fire – Heating pottery or clay sculpture to a temperature high enough to render it hard and durable. Basic Terms cont.
  7. 7. Construction  Hand built Methods  Pinch method: Technique that involves squeezing the clay, usually between thumb and fingers.
  8. 8. Construction  Coil method: Attaching rolls of clay together to form pottery.
  9. 9. Construction  Slab method: Technique that involves shaping clay into a broad, flat, thick piece.
  10. 10. Clay Stages  Greenware – Unfired pottery or sculpture.  Leatherhard – The stage between plastic and bone dry when clay is dried, but may still be carved or joined to other pieces.  Bone dry – Stage of drying when moisture in the clay body has evaporated so the clay surface no longer feels cold.
  11. 11. Clay Stages cont.  Bisqueware – Ceramic ware that has gone through the first firing at a relatively low temperature and still maintains its porous state.  Glazeware – Ceramic ware that has been fired at a high temperature with glaze, which forms a coating of glass onto the surface.
  12. 12. Tools  Fettling knife – A long tapered knife used for cutting and trimming clay.  Loop tool – A small loop with a handle used to carve clay away.
  13. 13. Joining Techniques  Score – Scratching the edges of clay before joining them together.  Slip – A fluid suspension of clay in water used in joining clay pieces and for surface decoration.  Bond – A mix made from clay slip of the same type of clay as the clay piece.
  14. 14. Lidded Vessels

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