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Ceramics Ceramics Presentation Transcript

  • Ceramics Creating a ceramic vessel
  • Clay  Clay is a natural 3-d medium made from earth and water.  Clay is different from mud because it has plasticity, this means I can hold shape while being handled.  In Asheville at highwaterclays.com North Carolina wet clay is sold as cheap as $.55 per pound, but has a fifty pound minimum.
  • Basic Terms  Ceramics – objects that permanently retain their shape when heated to the necessary temperature.  Pottery – Moist clay shaped into utilitarian objects such as bowls, cups, plates, etc. then hardened by heat.
  • Basic Terms Continued  Wedge – A way of improving the workability of the clay by reforming the mixture to be homogeneous by evening the texture and eliminating the air bubbles.
  • Basic Terms Continued  Kiln – may also be pronounced kill, is a specialized oven design to heat clay to the high temperatures needed to change it’s chemical make-up.
  • Basic Terms Continued  Fire – Heating pottery to a temperature high enough to change it’s chemical make-up to render it a final product.
  • Hand Building Methods  Pinch pot  Slab Building  Coil Building
  • Hand Building Methods  Pinch pot - Hand building method which involves squeezing clay between thumb and fingers.
  • Hand Building Methods  Coil Building – Attaching long thin rolls of clay together to create a ceramic work.
  • Hand Building Methods  Slab Building - Clay building technique where thin sheets of clay are attached together to create a ceramic work.
  • Construction terms  Scoring – scratching the edges of clay before jointing. (ALWAYS SCORE DEEP)  Slip – a mixture of clay and water which acts as a clay glue.
  • Clay Stages  Greenware - moist workable unfired clay.  Leatherhard - stage of clay where joining should happen, at this point clay is not moldable but may still be worked with.  Bone Dry - this is as dry as the clay gets without firing it. It is now ready for firing.
  • Clay Stages  Bisqueware – clay which has gone through a low fire in a kiln, this can not be recycled, will not yet hold water.  Glazeware - clay which has been glazed and fired at a high temperature, now is a finished product.  Glaze - a liquid glasslike substance which when fired creates a glasslike coating on a ceramic artwork.