Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
38 Cards in this Set
- Front
- Back
Wedging |
A method of kneading clay to make it homogenous by cutting and rolling |
|
Vitrification |
the firing of pottery to the point of glossification |
|
Stoneware |
Firing range: Cone 5-11 fire to cone 10 2381 degrees F |
|
Dry-foot |
to keep the foot or bottom of a pot free from glaze by waxing or removing glaze |
|
Earthenware |
a low fired clay body. glazed pottery is fired to a temp of 1830- 2010 degrees F. Available in red and white |
|
Engobe |
Colored clay slip used to decorate greenware or leather hard pieces before bisque firing. Clay, oxide, and water |
|
Essential properties of clay |
plasticity, porosity, vitrification |
|
Fire (verb) |
to heat a clay object in a kiln to a specific temp |
|
Firing Range |
the range of temp at which a clay becomes mature or a glaze melts |
|
Flux |
a melting agent causing silica to change into a glaze |
|
Foot |
base of a ceramic form |
|
glaze |
a thin coating of glass. an impervious silicate coating which is developed in clay ware by fusion under heat of inorganic materials |
|
glaze firing |
the final firing, with glaze |
|
greenware |
unfired pottery, ready to be bisque fired |
|
heat/work theory |
to achieve an event/reaction, material is heated to a specific temp at a specific rate/time. Pyrometric cones have a number that corresponds to heating rate/temp combo |
|
kiln |
a furnace of refractory clay bricks for firing pottery and for fusing glass |
|
leather hard |
stage of the clay between plastic and bone dry. clay is still damp enough to join it to other pieces using slip. |
|
maturing point |
the temp at which the clay becomes hard and durable |
|
pinch |
manipulate clay with your fingers in your palm to hollow shape. pinch pots are a popular beginner project |
|
plasticity |
the quality of clay which allows it to be manipulated into different shapes without cracking or breaking |
|
porcelain |
white stoneware, made from clay prepared from feldspar, china clay, flint and whiting |
|
porosity |
the porous quality of the clay body is determined by the size of aggregate or size of pore in the clay mixture |
|
rib |
a rubber, metal, or wooden tool used to facilitate wheel throwing of pottery forms |
|
slab |
pressed or rolled flat sections of clay used in hand building |
|
slip |
clay mixed with water with a mayonnaise consistency. used in casting and decoration |
|
soaking |
maintaining a low steady heat in the early stages of firing to achieve a uniform temp through the kiln |
|
stacking |
load a kiln to hold the max number of pieces |
|
stoneware |
all ceramic wear fired between 2100 and 2300 degrees |
|
chuck |
a piece used to aid the potter in trimming. a chuck is a form that can hold a pot upside-down above the wheel head while the potter trims it. chucks are thrown and bisque fired clay cylinders which are open on both sides |
|
clay |
alumina, silica, and water |
|
clay body |
a mixture of different types of clays and minerals for a specific ceramic purpose. (porcelain) |
|
coil |
a piece of clay rolled like a rope |
|
composite pot |
pots that were thrown or hand built in separate pieces and then assembled |
|
cone |
pyrometric - a pyramid composed of clay and glaze, made to melt and bend at specific temp. it is used in a kiln to determine the end of a firing or in some electric kilns it shuts off a kiln setting |
|
banding wheel |
a revolving wheel head which sits on a pedestal base. turned by hand |
|
bisque |
pottery which has been fired once, without glaze to a temp just before vitrification |
|
bisque fire |
first firing, without glaze |
|
bone dry |
completely air dried |