A slaking clay (a typlical potters clay). On the left the clay bar has been in the water for around 10 seconds. On the right, after a couple minutes, the rate of slaking has increased dramatically. Within about 5 minutes this bar will disappear into a pile on the bottom. Slaking happens most quickly when the sample is completely dry and the clay has low plasticity. Very high plasticity clays can take hours to slake. Slaking can be reduced and even eliminated by the addition of a hardener (like Xantham gum).
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