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Ceramics Q1 Quiz
Question | Answer |
---|---|
stages of clay | slip, plastic, leatherhard, bonedry, bisqueware, glazeware |
slip | watered down clay that can be used as a pottery glue |
plastic | clay that you can easily mold and model |
leatherhard | clay that is somewhat hard. good for carving |
bonedry | clay that is dry and ready to be fired. vary fragile, also called greenware |
bisqueware | clay that has been fired once in the kiln. clay can never turn back into wet clay |
glazeware | clay that has been fired again with glaze |
glazes are a mixture of | silica-glass former, flux-melting agent, alumina or aluminum oxide (allows glaze to stick to clay), colorants |
glaze is applied at ______ degrees fahrenheit | 1300-2500 |
underglaze | glaze that doesn't run, needs clear glaze after |
engobe | pigmented slip to color clay |
1st golden rule of ceramics | clay must be thoroughly covered up with plastic to keep it from drying out. This applies to works in progress and moist clay |
2nd golden rule of ceramics | clay dust can be harmful if you are exposed to it for long periods of time, so keep your area clean, clay scraps off the floor and clean with water and a sponge. Never do anything that will create dust like sanding bone dry greenware |
3rd golden rule of ceramics | clay can be no thicker than your thumb |
4th golden rule of ceramics | in order for clay to stick together it MUST be scored and slipped together while the clay is moist or leather hard |
5th golden rule of ceramics | wedge clay to remove air bubbles, achieve uniform consistency, and to line up the particles of clay |
6th golden rule of ceramics | trapped air can cause clay to explode. So hollow out sculptural forms and put needle holes from the bottom so air can escape |
7th golden rule of ceramics | don't glaze the bottom of a piece. It will stick to the kiln shelf when the glaze melts |
8th golden rule of ceramics | always wash or wipe a piece before glazing |
9th golden rule of ceramics | always carve your name on the bottom of your work |
10th golden rule of ceramics | always handle your projects with two hands at all times. In other words BE CAREFUL, it’s your hard work. Never lift pots by the rim |