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The principle of a self-glazing clay was originally developed in Ancient Egypt and now Walker Ceramics bring it to you in the form of

Egyptian Paste (Product Code BA335).

It has unusual properties that permit the salts to leech to the surface of the clay during drying and firing stages.

When fired at low temperatures, the salt fuses with the silica in the clay body to create a coloured glaze.

You need only the colouring agents, a few lengths of nichrome wire, an electric kiln and your own imagination to create an endless collection of beads, buttons, scarabs, pendants and other jewellery.

Egyptian Paste is supplied in the form of white powder and with the following recipes you can create the colours you desire.

The recipes are based on the use of 1 kilogram of Egyptian Paste.

Orange

Potters Colour FW5808

30 grams

Yellow

Potters Colour FW5400

30 grams

Blue

Cobalt Carbonate BA220

10 grams

Black

Manganese Dioxide BA620

30 grams

Blue/Green

Copper Carbonate BA250

10 grams

Green

Chrome Oxide BA180

30 grams

Red

Red Iron Oxide BA500

30 grams

Grey

Potters Colour FW5608

10 grams

METHOD

Spread 1 kilogram of Egyptian Paste on a clean, flat non-absorbent surface.

Spread selected colouring agent over the paste.

Mix with a palette knife.

For glazing, take the required amount of powder and add water until a plastic dough like consistency is reached.

Do not mix more mixture than required at any one time.

THINGS TO REMEMBER…

Egyptian Paste is not like normal plastic clay. As little handling as possible is advised as the salt content is diminished with excess work resulting in no glaze effect when fired. The body that the paste creates is short and open and provides little plasticity, it has little green strength and is therefore easily breakable.

Egyptian Paste may be thrown but only for small pieces and water must be used to lubricate the clay, it is normally shaped by hand, rolled with a rolling pin or pressed into moulds.

Allow for complete, slow drying and if possible thread the pieces onto nichrome wire NP3. This makes for ease of handling and firing.

Fire the pieces between 850 - 950°C and the colours will be vivid and bright.

 

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Copyright © 2010 David Walker / Ozclay Pty. Ltd. All rights reserved.
Revised: December 18, 2010 .