A machine with revolving blades that chop, mix, and de-air ceramic clay. The pug mill is used to consolidate clay masses. Pug mills are manufactured in many sizes. Pictured here is a small one that is extruding porcelain.The pug mill is important equipment in a ceramic studio, but it can also be appropriate in an elementary art classroom where there is a need to recycle clay that does not become pottery on its first use. Pugging clay by hand is tremendously time- and labor-intensive, and storing unusable clay can require considerable space. These are many other reasons using a pug mill to recycle clay may be advantageous for an art education program.Pug mills have design features that make them safe and easy to use in classrooms.