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The uses of paint are described. The constituents of an oil paint are described and the function of each ingredient is explained. The differences between an oil paint and an emulsion paint are then explained. The raw materials are briefly described. The process for making a variety of paints is fully automated. Agitation at very high speed is needed in order to make sure that the ingredients are fully mixed. Testing for quality control is also described and the clip ends with some examples of uses for ‘smart paints’.