In sawdust firing the piece is packed in a kiln structure surrounded by sawdust. The sawdust is set alight and allowed to burn until combustion ceases from lack of fuel. As the sawdust burns, rich patterns of carbon smudging are left on the surface of the piece. Pieces fired in sawdust have a natural and direct quality that can be very appealing.
       The firing is done in a simple firing container rather than in a true kiln. The container requires only a top and walls with small openings to allow air to reach all parts of the densely packed sawdust and smoke to leave during combustion. Sawdust "kiln" can be made from bricks or a metal trash can with holes pierced in the sides with a sharp tool to allow air to enter.
       Pieces intended for the sawdust fire can painted first with Terra Sigillata, which takes the sawdust well and emphasizes the fire markings.