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Words beginning with W
Wedging, kneading
Wedging clay is similar to kneading bread dough. Clay tends to set up over time and the process of wedging it loosens it up. It is not uncommon for the clay to soften dramatically on wedging, this is thought to occur because of of mobilization of water between the flat particles of clay and the disruption of a stable electrical charge pattern between water and clay that develops over time.
Wedging also performs the function of lining up the flat clay particles concentric to the center of the mass allowing them to slip over each other more easily in that direction.
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