These two 4mm thick pieces of clay have had 1% of an Xantham gum added. The gum was just shaken together with the powder and then 21% water was added and it was stirred in a cup and then wedged to plastic working consistency. The piece on the left was underwater for 1 hour! Without the gum it would have slaked within a couple of minutes. Of course, there is an issue, the gum destroys the plasticity of the clay!