Greek god of fire, technology, engineering, sculpture and metallurgy.

He was adored in all places in Greece where craft activities were found, but especially in Athens. Homer, in his poem Illiad tells of how Hephaestus was ugly and bad-tempered, but with great strength in the muscles of his arms and shoulders, so that everything he crafted was of an incomparable perfection.

Roman counterpart of Efesto was Vulcano.

This painting presents different materical effects on the surface.