Which of the following is not a method of ceramic production?

Explanation

Wedging is a preparation step, not a production method. It removes air bubbles from clay before shaping. This makes the clay ready to use.

Methods like mould, slab, and coil actually shape the clay. They create the final ceramic form. Wedging just prepares the material.

Think of wedging like kneading dough before baking. It is important but not the actual making process. True production methods create the finished piece.