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Gum Arabic is made from the sap of the Acacia tree. It is used as a binder for two paints: water color and gouache. The amount of pigment used dictates whether it results in a transparent or opaque paint.
Grind up the gum arabic as much as possible in a morter. Put it in a double boiler and cook till it's dissolved as it's going to get. It may never all dissolve and you could strain it through cheesecloth. Put the pigment in a bowl and add a small amount of the binder mixing well into a smooth paste, then gradually add the rest of the binder. Use as any watercolor. I don't need to tell you it's not washable. Best used for decorative effects. |
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