The casting method described below is commonly used in West Africa from Guinea to Cameroon. The main centres are in the regions of the Akan people (Ivory Coast and Ghana), the Yoruba (Nigeria) and the Bamim (in the Cameroon Grassland). The technique is known as lost wax casting. In this the model is fashioned in wax complete with sprue channels, then coated with clay, dried and subsequently heated sufficiently for the wax to melt an flow out. The model as such does therefore no longer exist, except in negative as a cavity into which the metal is to flow. this method is known to have been used in most metal-working centres from the Mediterranean to the Orient, from South Asia to Central and South America. However, the one used in West Africa, and in some areas of tribal India, has one aspect which distinguishes it from all others: The casting process is effected in what I call a Closed circuit, in that the drained model and the crucible with the required amount of metal in it are joined together and covered with an overall jacket of clay. The complete from, thus closed and loaded with metal, is then placed in the oven with the crucible part at the bottom and heated till the metal is melted. It is then taken out and turned upside down, so that the metal flows into the mould. Specific characteristics and functions are discussed along with equipment and tools, the work media and the work process.