How to Store Polymer Clay: An Essential Guide

Polymer clay is well known for being workable even after it sits out for days. But it won’t last forever if it isn’t stored properly. luckily, there are plenty of ways to store polymer clay, from wrapping to bagging to boxing.

Find out some of the pros and cons, dos and don’ts of how to store polymer clay to make sure it lasts as long as it should!

Understanding Polymer Clay

Polymer clay is a versatile crafting medium, loved for its flexibility and wide range of vibrant colours. Made of polymer polyvinyl chloride (yes, that’s a mouthful), it can be molded, sculpted, and baked in a home oven to create all kinds of crafts, from jewellery to miniatures.

Despite its sturdiness once baked, raw polymer clay has specific storage needs to preserve its workability and lifespan. Understanding its unique chemical composition can guide us in finding the best ways to store it, ensuring it remains usable for future projects.

Importance of Proper Polymer Clay Storage

Not storing polymer clay properly can affect it in several ways that will ultimately shorten its life and make it more difficult to work with.

Hardening: If polymer clay is exposed to the air for an extended period of time or in freezing temperatures, there’s a chance it loses some of its plasticizers, becoming excessively hard or brittle and difficult to work with. It’ll also make it easier to crack or break when it’s cured.

Colour Changes: Sunlight and UV exposure can cause colour fading or discolouration in the clay.

Deformation: Improper storage can lead to deformities or warping in the clay, especially if it’s subjected to pressure or extreme temperatures.

Contamination: Dust, dirt, or lint can adhere to the clay if not stored in a clean environment.

Step-by-Step Guide on How to Store Polymer Clay

Properly storing polymer clay is crucial in maintaining its quality, adjustability and longevity. Here is a comprehensive, step-by-step guide on how to prepare and store your polymer clay correctly.

Preparing Clay for Storage

The first step is to prepare your polymer clay for storage, and doing so is relatively straightforward:

1. Make sure your hands are clean before touching the clay to keep dirt, dust, or oils from adhering to it.
2. Use a dedicated craft knife or blade to slice the polymer clay into manageable pieces, usually about 1 to 2 inches thick. This makes the clay easier to store and transport.
3. If the clay is particularly soft or sticky, let it sit for a while at room temperature. This allows it to firm up and be less prone to deformation.

Recommended Storage Methods

Airtight plastic containers

• Make sure the containers are free of dust and other particles that could stick to the clay.
• Opt for clear containers so you can see what’s inside without opening them.
• Go for boxes with the ‘recycling’ mark, as some plastics will cause plasticizers to leach.

Wax paper

• Use wax paper to separate individual pieces of clay or for storing polymer clay canes to prevent them from sticking to each other.

Cling film

• Use cling film or plastic wrap to protect small pieces of clay or canes.

Sealable plastic bags

• Ziplock bags can be handy, space-saving storage for polymer clay.

Materials to Avoid

• While paper can be used for working on or lining a baking tray, paper causes polymer clay to leach colour, so it should be avoided for long-term contact with clay.

Tips and Tricks for Polymer Clay Storage

Now that we’ve covered the basic steps of storing polymer clay, let’s delve into some extra tips and suggestions that can further maintain the quality of your clay and ease the storage process.

• It’s good practice to remove and knead your stored clay from time to time. This keeps it from becoming too brittle and maintains its flexibility.
• If you notice any dust or dirt on the clay, gently scrape it away with a craft knife before it becomes embedded in the clay.
• If the clay becomes too hard in storage, try mixing in a bit of clay softener to restore its pliability. However, use this sparingly as too much can make the clay sticky.
• Avoid direct sunlight, as ultraviolet light can cause the clay to harden or discolour.
• Try not to store clay in extreme temperatures. The best temperature for storing polymer clay is room temperature or slighty colder, as long as it does not cause the clay to freeze.

By following these guidelines, you will be well-equipped to store and preserve your polymer clay effectively, helping it retain its quality and versatility for your future projects.

Follow this guide to learn even more about crafting with polymer clay.

Polymer Clay Storage FAQ

How does improper storage affect polymer clay?

Improper storage can lead to polymer clay becoming hard, brittle, or crumbly. It can also cause colours to bleed into each other. Additionally, some clay types may react with certain plastics and materials, causing them to become sticky or discoloured over time, ruining the clay.

Why is it important to properly store polymer clay?

Proper storage of polymer clay maintains its malleability and vibrancy, which is important for its long-term usability. Furthermore, it prevents contamination from dust, lint, or other substances, ensuring that you get the best out of your clay when you use it for your projects.

Are there any specific materials to avoid when storing polymer clay?

Yes, avoid storing polymer clay in containers made of polystyrene, as it can react with the clay, causing it to become sticky. It’s generally safer to use glass, metal, or certain types of plastic like polypropylene for storage.

What’s the best way to prepare polymer clay for storage?

The best way to prepare polymer clay for storage is to ensure it’s cool, clean, and dry. Sealing each block or piece of clay in an airtight container can preserve its freshness and prevent contamination. Separation by colour is also advisable to prevent colours from bleeding into each other.

Any additional tips for long-term storage of polymer clay?

Avoid exposing stored polymer clay to heat and sunlight as it could prematurely cure or discolour the clay. Humidity can also affect the texture, so store your polymer clay in a cool, dry place. Regularly checking the state of your stored clay can ensure its quality is maintained.