In the old days they used tempera for the underpainting and the underpainting. I guess one has to respect the advice of our ancesters who did not want us to repeat their mistakes. I use either a turpentine wash or tempera for the imprimatura. Most people want a modern INSTANT formula but that is not always possible. Leonardo Da Vince was a scientist too and he tried to get away from the advice of the elders, but most of his experiments ended up in disaster.
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Tito Champena
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Hybrid Mode
