Which technique is used to remove air bubbles from clay?

• A. Score & Slip
• B. Kneading/Wedging
• C. Grog
• D. Kiln

Answer: (B)

Removing air pockets from plastic clay is done by kneading or wedging. As you press, fold, and turn the mass, you push trapped air out and even out the moisture, giving the clay a uniform texture. This helps prevent issues like pinholes or blowouts when the clay is fired, since gas bubbles trapped inside can expand and cause cracks or explosions during heating. Kneading also makes the clay easier to shape and join later.

Other techniques are used for different purposes: scoring and slipping are about creating a strong bond when attaching one piece to another; grog is an additive that helps with texture and reduces shrinkage; and a kiln is the oven used to fire the clay, not a method for removing air pockets.