What is the purpose of the raku technique in ceramics?

The purpose of the raku technique in ceramics primarily revolves around the specific firing method that involves removing the piece from the kiln while it's still hot and placing it in a combustible material, which leads to a reduction atmosphere. This process "starves" the piece of oxygen, creating unique color variations and surface effects that are characteristic of raku pottery. The dramatic changes in color result from the chemical reactions that occur when the hot ceramic interacts with the combustibles, leading to striking results that are often vibrant and unpredictable.

This technique is not aimed at creating structurally sound pieces, reinforcing the clay body, or increasing the firing temperature. Instead, raku often results in pieces that are more fragile and less durable due to the quick cooling and reduction process, emphasizing the artistic qualities and surface aesthetics over structural integrity. Such distinct results are what distinguish raku from other ceramic glazing and firing techniques.