How to Repair Cracks in Activia Air Dry Clay
Activa Air Dry Clay is a paper clay --- it's shipped moist, can be worked immediately, and will air dry overnight. One disadvantage of this medium is that improperly used, it tends to crack. The good news is that it can be mended if the crack is not too severe. Although the best solution is prevention, here are some possible steps to take toward repairing youthful work that has succumbed to the nature of the medium.
Instructions
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The best solution to cracks in air-dry clay is prevention. Cracking is usually caused by over-working the clay and allowing it to dry out. To prevent drying problems, dampen fingers and work with the clay till it is smooth and pliable, but not sticky.
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Support slender objects such as branches or arms during drying. Placing a small paper armature under and area that is likely to be fragile helps prevent it from falling off as it dries. Try not to create too many areas that are toothpick-sized, as these tend to break readily.
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If working with a slab or coil pot or small sculpture, gently brush the brittle area of the work with water and smooth with finger tips or a small sculpting tool. If possible, monitor the drying process, and brush on a little water if an area shows signs of cracking.
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To repair cracks in completely dry objects, carefully add a little white school glue to the broken spot. Use it sparingly, as it tends to re-moisten the clay. Stick the broken parts together and hold. Allow the mend to dry before processing further.
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Paint over the break with an opaque paint that will cover white glue. (Tempera tends to bead off and change color, but adding more than one coat can help this.)
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Glaze the work using a commercial water-color glaze or a solution of water and white glue. Be careful not to smear the painted design. The glaze will help fill any remaining cracks, and give the work a professional-looking finish.
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Tips & Warnings
Prevention really is the best method here. Monitor work closely.
Some breaks are impossible to repair.
References
- Photo Credit clay art image by kastock from Fotolia.com
