In sheet metal work, he cutting force on the tool can be reduced by

Providing shear on the tool helps to reduce the cutting force in sheet metal operations.

When shear is provided, the cutting action takes place progressively rather than simultaneously over the entire area, thereby decreasing the amount of material being cut at any instant.

This progressive cutting lowers the cutting force, improves the quality of cut, and increases the tool life.

Hence, providing shear on the tool effectively reduces the cutting force required during the operation.