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Augers like these force the clay into the nose of the pugmill for extrusion. The one on the left was originally the same size as the one on the right. But the wear of grog particles in the clay have worn it down. Particles of quartz also take their toll on pugmills.
| Glossary |
Pugmill
The practice of removing air from clay as it is pugged. Deaired clay has better forming properties and produces a smoother fired surface. |
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