How to Store Pottery Clay

Storing pottery clay properly is crucial for maintaining its quality and workability. Whether you’re a seasoned ceramic artist or a beginner, understanding the best practices for clay storage can significantly impact your creations. In this guide, we will explore the various methods to store pottery clay effectively, ensuring that it remains moist and pliable for your next project. By following these tips for how to store pottery clay, you can avoid unnecessary wastage and ensure that your clay is always ready for use.

Importance of Proper Clay Storage

Proper clay storage is essential for several reasons. Firstly, it helps to preserve the moisture content of the clay, which is vital for maintaining its pliability. If clay is allowed to dry out, it may become hard and unusable, leading to wasted materials and resources.

Secondly, adequately stored clay minimizes the risk of contamination from dust, debris, or other foreign substances, which can adversely affect the quality of your work. Lastly, understanding the importance of proper storage techniques can enhance your overall efficiency as a pottery artist, allowing you to easily access and prepare your materials for various projects without unnecessary delays or complications. By prioritising effective clay storage, you not only protect your investment but also support your creative process.

Types of Pottery Clay

There are several types of pottery clay, each suited for different techniques and artistic expressions. The most common types include:

1. Earthenware: This clay is fired at lower temperatures and is known for its porous nature. Earthenware is ideal for beginner potters due to its ease of use and is often used for creating functional items such as dishes and pots. It can be glazed for a more polished finish.
2. Stoneware: Fired at higher temperatures than earthenware, stoneware is a dense and durable clay that is often used for functional pottery. Its non-porous nature makes it suitable for both decorative and utilitarian pieces, and it can withstand microwave and dishwasher use.
3. Porcelain: Known for its delicate beauty and translucence, porcelain is a high-fire clay that requires more skill to work with. It is often used to create fine tableware and decorative objects. Due to its vitrified nature, porcelain is strong and can be used for detailed, intricate designs.
4. Raku: This type of clay is specifically formulated for raku firing, which involves removing pottery from the kiln while it is still hot and placing it in combustible materials. The unique firing process creates distinctive surface effects, making raku pieces highly sought after for their artistic qualities.

Each type of clay offers unique properties and possibilities, allowing artists to choose the best fit for their intended projects and techniques. Understanding these differences guides potters in selecting the right clay for their artistic vision.

10 Methods How to Store Pottery Clay

1. Using Airtight Containers

One of the simplest and most effective methods to store pottery clay is using airtight containers. Airtight containers prevent air from reaching the clay, which can cause it to dry out. Choose plastic containers with tight-fitting lids, ensuring they are large enough to hold your clay comfortably. Place the clay inside the container and press down to remove any air pockets. Secure the lid tightly to create an airtight seal. This method is particularly effective for smaller batches of clay and can keep the clay moist and pliable for an extended period.

2. Wrapping in Plastic

Wrapping clay in plastic is a traditional method that effectively retains moisture. Use heavy-duty plastic wrap or plastic bags to encase the clay completely. Ensure there are no gaps or openings where air can enter. For added protection, double-wrap the clay to create an additional barrier against air exposure. After wrapping, store the clay in a cool, dark place to further prevent drying out. This method is convenient for both large and small quantities of clay and allows for easy handling and transportation.

3. Keeping Clay in Damp Towels

Storing clay in damp towels is an excellent way to maintain its moisture content. Begin by dampening a clean towel with water—ensure it’s damp but not soaking wet. Wrap the clay in the damp towel, covering it completely. Place the wrapped clay in a plastic bag or airtight container to prevent the towel from drying out. Check the towel periodically and re-dampen it as needed. This method is particularly useful for short-term storage and keeps the clay soft and workable.

4. Using Clay Storage Bags

Specialized clay storage bags are designed to maintain the ideal humidity level for pottery clay. These bags are made from materials that allow moisture to escape slowly, preventing the clay from becoming too dry or too wet. Place the clay inside the storage bag and seal it according to the manufacturer’s instructions. Store the bag in a cool, dark place to further protect the clay. Clay storage bags are particularly beneficial for long-term storage and can keep the clay in optimal condition for several months.

5. Storing in a Clay Locker

A clay locker is a dedicated storage unit designed to maintain the perfect environment for pottery clay. These lockers often feature adjustable humidity levels and airtight seals. To use a clay locker, place the clay inside and set the desired humidity level. The locker will automatically regulate the moisture content, keeping the clay soft and pliable. Clay lockers are ideal for studios and serious potters who need to store large quantities of clay over long periods. While more expensive than other methods, they offer precise control over the storage environment.

6. Adding Moisture Balls

Moisture balls are small, water-absorbent balls that can be placed in clay storage containers to help maintain humidity. To use moisture balls, soak them in water until fully saturated. Place the saturated balls in the container with the clay, ensuring they are evenly distributed. The moisture balls will release water vapor slowly, maintaining the clay’s moisture content. This method is effective for both short-term and long-term storage and can be used in conjunction with other methods like airtight containers or plastic wrapping.

7. Using a Humidifier

For large studios or spaces where significant amounts of clay are stored, using a humidifier can help maintain the overall humidity level. Set up the humidifier in the storage area and adjust it to the desired humidity level, typically between 50-70% for clay. Monitor the humidity regularly and refill the humidifier as needed. This method is particularly useful in dry climates or during winter months when indoor air tends to be dry. A humidifier helps maintain a consistent environment, ensuring the clay remains soft and workable.

8. Burying in Moist Sand

Burying clay in moist sand is an ancient method that effectively maintains its moisture content. Fill a large container or sandbox with moist sand and bury the clay completely within it. Ensure the sand remains moist but not waterlogged. Check the sand periodically and add water as needed to maintain the moisture level. This method is especially useful for larger quantities of clay and long-term storage. The sand provides a natural, breathable environment that keeps the clay from drying out.

9. Creating a Clay Slip

Turning clay into a slip is another method to preserve it. Clay slip is a liquid mixture of clay and water that can be stored indefinitely. To make a slip, break the clay into small pieces and place them in a container. Add enough water to cover the clay and let it sit until the clay dissolves into a thick, creamy consistency. Stir the mixture to ensure even consistency and store the slip in an airtight container.

10. Refrigeration

Refrigerating clay is an unconventional but effective method for maintaining its moisture content. Place the wrapped clay in a plastic bag or airtight container and store it in the refrigerator. The cool temperature slows down the evaporation of moisture, keeping the clay soft and pliable for longer periods. This method is particularly useful for small batches of clay or when storing clay in hot, dry climates. Ensure the clay is well-sealed to prevent it from absorbing odors or moisture from the refrigerator.

Common Mistakes to Avoid

When storing pottery clay, certain common mistakes can lead to undesirable results, such as drying or hardening. One frequent error is not ensuring that the clay is wrapped tightly enough, allowing air exposure that can lead to a crust forming on the surface.

Another mistake is neglecting to check the moisture levels in storage methods like damp towels or moisture balls; failing to update these can cause the clay to dry out. Additionally, using containers that are not truly airtight can compromise the effectiveness of storage methods, increasing the risk of moisture loss. It’s also crucial to avoid placing clay in direct sunlight or excessively warm environments, as heat can accelerate drying.

Conclusion

Proper storage of pottery clay is essential to maintain its usability and longevity. By using methods such as airtight containers, plastic wrapping, damp towels, specialized storage bags, clay lockers, moisture balls, humidifiers, moist sand, clay slip, and refrigeration, you can ensure your clay remains in optimal condition. Thanks for reading, and we hope this has given you some inspiration on how to store pottery clay!