Delft Clay Extra

This Delft™ Clay Extra is an additive that you can use to rejuvenate your reusable Delft Clay casting clay. As time goes on, your Delft Clay becomes contaminated with cast-off materials from the items you mold and cast. Simply mix some of this Delft Clay Extra into your Delft Clay to restore its molding characteristics. Start with approximately 10% Extra by weight and adjust the amount depending on the condition of your clay.