The term "gesso" is derived from the Italian word "gesso," meaning "chalk" or "plaster."
Gesso is a type of primer used in the preparation of surfaces, particularly in painting and sculpting. It is composed of a mixture of gypsum (calcium sulfate), water, and a binding agent such as glue or acrylic resin. The binding agent helps to adhere the gesso to the surface and provide a smooth, absorbent base for paint or other materials.
Gesso has been used for centuries as a preparatory layer in painting, dating back to ancient Egypt. In the Middle Ages, it was commonly used to prepare wooden surfaces for panel paintings. Gesso's absorbent properties help to prevent the paint from sinking into the wood and provides a stable surface that prevents cracking and peeling.
In addition to its use in painting, gesso is also commonly used in sculpting, where it serves as a base layer for models or casts. It provides a smooth, white surface that is easy to carve or mold.
Gesso is a versatile material that has a variety of uses in the arts. Its affordability, ease of application, and absorbent properties make it a popular choice for preparing surfaces for painting and sculpting.
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