An ergonomically designed slitter rig module is a feature of Maxson’s Dual Knife Rotary Sheeters. The design incorporates a switch that constantly monitors the tension of the safety cord positioned across the width of the slitter rig. If the cord is pulled, an emergency stop is initiated. Once an emergency stop is activated, the sheeter can only be restarted manually. The slitting rig module’s design permits quick change of the bottom rings without removing the lower slitter shaft. A web clamp is incorporated into the module, which holds the web in place in the event an emergency stop is activated. Under such a condition, the cutter’s squeeze roll is raised. This feature does away with the need for the operator to rethread the sheeter after an emergency stop is activated.