When to use oil paints?
Oil paints should be spread more thoroughly with a brush on the surface, and its layers cannot be thick, due to the possibility of water stains. Oil paint is nothing else, as a top protective layer, therefore all previous colors must be carefully covered with a layer of primer paint. Oil paints are mainly used on wooden and / or metal surfaces, yes indoors, and in the open air. Oil paints generally do not require additional dilution, unless you are using a sprayer.
Enamel requires extremely precise brush strokes, as the shiny surface reveals any unevenness. Like the emulsion, it is applied in layers, allowing each subsequent layer to dry.