THE ALCHEMY OF CHEMICALS
Patination is the process by which a metal object develops a thin layer of oxidized metal on its surface. This thin layer is called the “patina,” and it can be formed intentionally (by using oxidizing chemicals) or unintentionally (by exposure to an oxidizing environment, such as polluted air). Buccacio Sculpture Services does both Hot & Cold Patinas in a variety of colors and textures.
Cold Patinas are, as a general rule, opaque. The application of these patinas involves applying the agent onto room temperature (cold) metal (65° – 75°F). No heat is involved. Most of the time, these patinas are applied in layers until the desired color is achieved. The drawback to Cold Patinas is that they are relatively fragile and need to be protected – either structurally or with lacquers, varnishes or waxes. Oil -based lacquers and varnishes tend to hold the colors better.
Hot Patinas are applied with a torch. Most Hot Patinas are transparent. The benefits to using heat – besides transparency – is that the patina chemicals get absorbed by the metal so it’s more than a surface-only treatment.
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