This gray, self-hardening modeling clay is prepared in moist form, ready to use for all methods of modeling, including wheel throwing and sculpting. Knead Marblex to increase plasticity before modeling. Allow the finished pieces to dry slowly and evenly on all sides at room temperature, and away from heat, until hard. When completely dry, finished pieces are durable but not waterproof. After decorating, it is a good idea to coat with shellac or varnish to seal it and make it water-resistant.
*Also comes in 25lbs
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