Hemming (or flattening) is a great way to finish sharp edges and to strengthen parts after bending sheet metal.
Bending short flanges
Wila High Quality CNC Press Brake Hemming Punch Tool, Press Brake
CHOOSING THE BEST PRESS BRAKE TOOLS FOR HEMMING SHEET METAL
Bending galvanized material
How to Choose Press Brake Tooling - KRRASS CNC Press Brake Online Shop
no indentation double fold tool for
Hemming Technology - Shop Metalworking Technology
issue 1 - Prima Power
What is Sheet Metal Bending: Definition, Types & Tips - ACCURL
Press Brake Tooling Selection Guide: Types, Features, Applications
Specific Punch Press - Coleman Machinery