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Ceramics vocab

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crystal alexander

on 10 December 2013

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Transcript of Ceramics vocab

Ceramics
Ceramics: The art of making things from clay.
Techniques
of forming clay

Stages of clay
Greenware
Greenware: Unfired pottery.
Fired ceramics
Fire: The term used for baking work in the kiln.
Leather hard
Leather hard: Clay that is dry enough to be joined or carved without distortion. Clay in this state is hard to bend but soft enough to be carved.
Bone Dry
Bone dry: Refers to clay that is ready to be fired. All of the moisture is gone from the clay. Clay is VERY FRAGILE at this stage.
Bisque/Bisque fire
Bisque: Fired pottery that is unglazed.
Bisque fire: The first firing of the clay, done before glazing and glaze firing.
Glaze/Glaze fire
Glaze fire: Firing to a temperature at which glaze melts to form a glasslike surface.
Glaze: A thin coating of special glass, used as a decoration and to seal clay surfaces.
Hand Building
Handbuilding: One of the oldest craft techniques in which objects are constructed entirely by hand.
Wheel Throwing
Throwing: Forming clay on the potters wheel.
Coil technique
Coil technique: Handbuilding technique in which the object is built up with rope like pieces of clay, one on top of another.
Slab Technique
Slab technique: Handbuilding technique in which flat pieces of clay are joined together. (Clay is flattened or thinned with a rolling pin).
Pinch Technique
Pinch technique: Handbuilding technique in which a ball of clay is pinched from the center out with the thumbs to create a bowl shape.
Bat: A plastic form attached to the potters wheel before throwing so your pieces can be removed without distortion.
Score and Slip
Scoring: Roughing up the surface of the clay for joining pieces.

Slip: A liquid form of clay used as a glue to join pieces. Can also be used for decoration.

Kiln: The large brick oven used for firing ceramic pieces.
Cone
Cone: A type of thermometer placed in the kiln to indicate when firing is complete. The cone is made of glaze materials and will bend to indicate the end of a firing. (We fire between Cone 04 and 06 which is approx. 1800
Wet clay
Stage of clay that can be formed into various shapes using either a handbuilding or wheelthrowing technique.
Wet Clay
Leather hard
Bone Dry
Bisque
Glazed Peice
Wedging
Wedging: A process of kneading the clay in a spiral motion forcing out air bubbles from the clay in order to obtain a uniform consistency. (trapped air will cause clay to explode in the kiln).
Texture
Texture: High or low patterns created by pressing or carving designs into the clay.
Incising: Carving designs into a flat surface.
Hand-Building
Wheel Throwing
Slip and score
Wedging
Texture
Centering
The proces of making a semetrical lump of clay that is precisely in the center of the wheel
Pulling
The process of raising the walls of the form.
Trimming
The process of taking away material to create a foot or design.
Foot: A raised peice of clay that allows the form to stand away from the surface it is placed on
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