Kiln loading
Loading a kiln is the action of organizing and arranging the ceramic pieces inside the kiln for firing, ensuring an efficient distribution of space and uniform heating. This arrangement is crucial to avoid deformation, breakage or accidental melting of pieces together, especially during glaze firing. Loading is performed with precision to ensure that heat flow and gases circulate optimally around the parts, achieving uniform firing throughout the kiln charge.
In bisque firing, the pieces can be stacked inside each other or placed in direct contact, as they are not glazed and there is no risk of them sticking together. This allows for greater efficiency in the use of kiln space. In contrast, during glaze firing, the pieces must be separated, as the molten glaze acts as an adhesive, causing the pieces to stick together if they come into contact. To avoid this, specialized tools are used, such as ceramic supports, posts and refractory shelves, which allow the kiln volume to be used to the maximum, distributing the pieces over several levels.
The shape and size of the parts also influence the loading strategy. Large pieces are usually placed at the bottom to prevent them from obstructing the flow of heat to the upper pieces. More delicate or thinner parts are placed in strategic positions to avoid thermal stresses that can cause breakage. The correct loading not only improves kiln efficiency, but also reduces energy costs and minimizes production losses.Interesting Fact
In anagama kilns, the kiln loading is carried out with almost ritual precision. Ceramists carefully arrange the pieces to take full advantage of the action of the fire and the ashes that circulate in the kiln atmosphere. The position of each piece can influence the final effect of the natural glaze, generating textured surfaces and unique tones that cannot be replicated in a controlled manner.Helpful Tip
Plan the arrangement of the pieces before firing to optimize space, use kiln furniture to prevent glazeed pieces from sticking together. Take advantage of shelves and racks of different heights to maximize kiln capacity.
