This machine can be used both in preparing the ceramic mass for resting stock and in the production line. Its function is based on a rotor of hammers that work inside a vat and force the clay to pass through a sieve. The sieve holes are designed according to the characteristics of the clay to be processed. The result is a mass in the form of small cylinders with perfect homogenization of clays and soil, in addition to uniform water distribution in this composition. It also cleans the raw materials by holding plant roots and other vegetable impurities in its sieve.