What is Alberta slip.
Alberta slip is a direct substitute for Albany slip compounded by the Archie Bray Foundation to duplicate the chemical and physical properties of Albany slip.
What is Albany slip.
Albany slip is a slip glaze made from Albany clay alone or modified with feldspar and other fluxes. The clay is an alluvial deposit of the Hudson River in the vicinity of Albany in New York State.
When Albany clay is used as a glaze it produces a series of rich yellows, blacks and browns over a wide range of temperatures from 1100c to 1300c. It was first developed when the early American potters followed the European practice of refining the body clay to make a glaze.
In Britain, the mud from many of the larger tidal rivers gives similar effects. It can b modified with feldspar, wood ash etc. and gives mostly tenmoku-type slip-glazes for stoneware.
Egyptian Paste was used, as the name implies, by the ancient Egyptians, as far back as 7,000 years ago. Ornaments made from this material have been found in most Egyptian burial tombs. Egyptian Paste is a self-glazing, low-firing clay body that was probably discovered by accident when a mixture of sand, clay, potash feldspar and soda ash were fired.
Read this entire article in the Articles section of this site 'Egyptian Paste'
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Guru Spotlight |
Patricia Walters-Fischer |