WET OR DRY PROCESSES Machines can be configured to operate with water (wet processes) and without water (dry processes), depending on needs. SEPARATION UNIT If required, machines can be fitted with a special unit to automatically separate pre-molded abrasive parts. This unit is constituted by a separation sieve situated next to the tank, with a drilled PVC grille or a grille with carbon steel strips, which can be easily replaced thanks to the patented system developed by Novagum (Wedge Lock System).