Key Considerations for Kiln Furniture

When selecting or buying kiln furniture, which includes shelves, posts, and other supports used in ceramics and pottery kilns, there are several key considerations to keep in mind:

1. Material: Kiln furniture is commonly made from materials like silicon carbide, mullite, cordierite, and alumina. The material chosen should have high thermal shock resistance, high temperature stability, and low thermal expansion rate to withstand the extreme conditions inside a kiln.

2. Size and Shape: The size and shape of the kiln furniture should fit the specific dimensions of your kiln. Consider the space available inside the kiln, the types of items you will be firing, and how the kiln furniture will be arranged for optimal heat distribution.

3. Load Capacity: Make sure the kiln furniture can support the weight of the items being fired without warping or breaking. Consider the temperature at which the kiln will be fired and choose kiln furniture with an appropriate load-bearing capacity.

4. Surface Finish: The surface finish of the kiln furniture can affect the quality of the finished pieces. Smooth, flat surfaces are ideal for preventing marks or indentations on pottery pieces during firing.

5. Cost: Compare the cost of different types of kiln furniture materials and brands to find a balance between quality and budget.

6. Manufacturer Reputation: Consider the reputation of the manufacturer or supplier. Look for companies with a track record of producing high-quality, durable kiln furniture.

7. Durability: Kiln furniture should be durable and able to withstand repeated heating and cooling cycles without warping or deteriorating.

8. Compatibility: Ensure that the kiln furniture is compatible with the type of clay body and glazes you are using to prevent any reactions that could affect the quality of the fired pieces.

By considering these factors, you can choose the right kiln furniture to meet your needs and achieve optimal results in your pottery or ceramic projects.