How to use self-hardening modeling clay? (Air Dry Clay)

Easy to handle, no baking required and full of creative possibilities , self-hardening clay (or air dry clay ) is an ideal activity for young and old. Whether you are a parent, teacher or DIY enthusiast, this guide will take you step by step to learn how to use it, avoid common mistakes and create your first works with ease.

What is self-hardening modeling clay?

Self-hardening clay is a flexible clay that hardens naturally in the air , without the need for baking. It can be used to create decorative objects, figurines, jewelry, or various accessories. Unlike salt dough or classic clay, it remains light, smooth , and does not require an oven.

It is suitable for both children (from 5 years old) and adults. It is a non-toxic material , easy to knead, and which keeps very well if stored correctly.

Good to know: self-hardening clay is also sold under the names "air dry clay", "DAS self-hardening clay", or "Fimo Air".

Necessary equipment

To get started, you will need:

• Self-hardening paste (white or colored)
• A smooth roller or bottle for spreading
• A smooth work surface or silicone mat
• Tools for cutting or texturing (round-end knife, cookie cutters)
• Water (to smooth or soften)
• Brushes, paint and varnish for finishing

Tip: Our kits contain everything you need to get started with ease (dough, tools, pastel colors, varnish). Ideal for families or as a creative gift!

Steps to properly use self-hardening paste

1. Prepare the dough

Before you begin, knead the dough well between your hands for 1 to 2 minutes. This makes it softer and more pleasant to work with. If it's a little dry, lightly moisten your fingers.

2. Model and create

• Roll out the dough with a rolling pin to obtain an even thickness.
• Cut out shapes using cookie cutters or sculpt by hand.
• To glue two parts together, lightly scratch the surfaces and moisten them before joining (the "score & slip" technique).
• Add prints (lace, plants, everyday objects) for a textured effect.

3. Dry properly

• Let the creations air dry on a cloth (clean tea towel or felt) for 24 to 72 hours depending on the thickness.
• Turn objects over halfway through to avoid warping.
• Avoid any direct heat source (radiator, hair dryer), this could cause cracks.

4. Finishing touches

Once completely dry:

• Lightly sand the edges with fine sandpaper to smooth.
• Paint with acrylic, gouache or watercolor.
• Varnish to protect and make your creation shine.

Ideas for easy creations using self-hardening modeling clay:

Here are some simple DIY projects to make:

• Heart or leaf shaped empty bowl
• Textured Pattern Pendants
• Wall hangings (geometric shapes or flowers)
• Cute figurines (animals, moons, mushrooms)
• Small vases for dried flowers

💛 To go further, discover 10 ideas for objects to make from clay and self-hardening modeling clay

Tips & mistakes to avoid

• Do not over-moisten the dough (it will become sticky or soft)
• Do not paint a paste that is still wet.
• Always store leftovers in plastic wrap + airtight container
• Work on a clean surface to avoid dust.
• Do not exceed 1 to 1.5 cm in thickness for optimal drying.

Can you make your own self-hardening clay?

Yes, here is a simple homemade recipe that we offer you on JOY!:

• 1 cup cornstarch
• 1 cup of white glue
• 1 tablespoon of vegetable oil
• Optional: white vinegar or lemon for preservation

Mix everything together in a saucepan over low heat until you get a smooth paste. Let it cool before using. It's less durable than store-bought paste, but it's ideal for a try!

Should you choose an Air Dry Clay kit instead?

A kit is particularly useful if:

• You are starting out
• You want to have everything at hand (tools, paint, varnish)
• Are you looking for a turnkey activity to do with a child or to offer

FAQ:

Can self-hardening clay be baked?

No, self-hardening clay, like the one offered on JOY!, is designed to air dry naturally . It should definitely not be put in the oven: this could crack, burn, or make it brittle. Let it dry gently, ideally on a cloth or felt.

Can this paste be used with a 5 year old child?

Yes, absolutely. It's even an excellent activity for sensory and creative development . JOY! offers kits suitable for ages 3 and up. The texture of the dough stimulates fine motor skills and helps develop the imagination. For younger children, it's simply recommended to accompany them (use suitable tools, gentle handling).

How to avoid cracks?

Cracks most often appear due to rapid drying or improperly prepared paste. To avoid them:

• Always work the dough by kneading it well at the start.
• Leave to dry flat , on a cloth or tea towel that absorbs moisture slowly.
• Never place the creation near a heat source (radiator, direct sunlight).
• Gently turn the objects over after 24 hours to ensure even drying.

Can you paint with anything other than acrylic?

Yes, of course. Acrylic is most commonly used, but you can also:

• Apply gouache ( for more matte shades)
• Use watercolor (wash effect, very soft)
• Sprinkle with dry pastel or pigments before drying

In any case, we recommend that you varnish your creation once the paint is dry, to protect it from humidity and improve its durability over time.