The A B C of Pottery
It is common knowledge that all pottery is made from fired clay so let's go on to the A B Cs of the subject.
A
- An additive - is the color given to clay even before work has started.
- Alkaline - is the various soluble mineral salts found in water and some soil.
- Alumina - along with silica is used in clay to give strength to the pottery as it does not melt at the high temperatures used in firing ceramics.
- Annealing - is a process in which pottery is exposed to a very high temperature and then allowed to cool to make it strong.
- Antiquing - involves using water based or oil based stains to accentuate its beauty.
- Arabesque - is the intricate floral or leaf patterns on the pottery.
B
- Ball Clay - may be used for many types of clays and is usually light colored and plastic.
- Batwash -is a mixture of flint and water which is used on the kiln shelves to prevent pieces sticking to it.
- Beading - occurs when glaze rolls back to form globs on a pottery.
- Bisque - is that pottery which is porous and unglazed after being fired at high temperatures.
- Blistering - is the name given to bubbles which break out on some fired ceramic objects.
- Bone ash - is the dried and grounded animal bones (usually cattle) used in making bone china.
- Burnishing - is the process of rubbing hard pottery with a hard object for a smooth appearance.
C
- Calcine - is the process of purifying material by heating it till temperatures of 1292- 1382 F.
- Cane clay- has sand like texture and acquires a straw like color when fired.
- Chamois - is extra soft leather which when wet is used to smooth out edges of wet and hard pottery.
- Chattering - is a rippling effect on clay which is used as a decorative technique.
- China clay - is the purest form of all clay.
- Cheese hard is a stage in pottery making where the object can be handled without the fear of deformation.