The splitting process of the hide in horizontal layers allows to reach the desired thickness and simultaneously to recover a byproduct (split) which is processed in a same way like the hide from which it derives; this operation can be done at different steps of the manufacturing process. The splitting in wet phase is practiced on tanned hides using the machines that are equipped with a circular band knife mounted on wheels, specifically designed to facilitate the hide introduction. Equipped with micrometric precision systems, such as the insertion table inclination and blade position, that ensure the thickness adjustment with very hight accuracy. The blades are automatically rebladed through grinding stones mounted on cart system.