Exam 3: Ceramics PPT's Flashcards
(55 cards)
T/F If ceramic mold is dirty, rinse it off.
F- Don’t get them wet or use tools on them. Only use dry brush to dust them off.
How do you get rid of air pockets/bubbles that could cause the piece to explode in the kiln?
Wedging
Besides getting rid of air bubbles, what else does wedging do?
-redistribute moisture equally to make clay softer and easier to handle
4 types of clay:
Clay, Earthenware, Porcelain (Kaolin), Stoneware
Which types are used with low fire?
Clay and Earthenware
Which types are used with med or high fire?
Porcelain and Stoneware
Liquid clay is called
Slip
Thick slip used for gluing two pieces of clay together
Slurry
This stage of clay is sufficiently hard and dry. It is the starting point for most work with clay. Should not be sticky
Plastic
This stage of clay is partly dry, plastic clay. Will bend but not easily break. Feels damp and cool. Can be cut, carved and stuck together with slurry
Leather Hard
Dry, unfired clay is called
Greenware
Stage of clay- product of first firing, color changes. May be glazed/painted. Slip cannot be used on it
Bisque
Final product stage. Achieved when bisque has been decorated, glazed and fired to melt the glaze
glost
Thin coating of glass which fuses to the surface of a clay body during firing.
glaze
Types of glazes
Low fire, High fire, Underglaze, Overglaze, Bisque stain
Types of glazes appearances
Opaque, transparent, high gloss, matte, stone texture, crackle, multi-color
Amaco high fire (06)
UT: Unique texture-matte stone-textured finish
Underglaze is used on what?
greenware or bisque
Amaco underglaze
LUG: intense, opaque color used for detail decoration
Duncan underglaze
CC: covercoat- solid opaque, porous matte finish Pure Brilliance: clear, transparent glaze finish to seal porous finish and brighten underglaze colors.
Overglaze is also known as what?
China Paints- done on low fire. Done to pottery that has already been glazed and fired at mature temp. Usually done by painters.
This is applied to bisque- it is non-fire stain and acrylic paints.
Bisque stain
Bare spots in glaze called
crawling
Small holes in glaze called
pinholing
