To think about bending a sheet of metal that has appreciable thickness focus on an imaginary central sheet the so called neutral line or neutral axis within the thickness.
Bending sheet metal without a break.
Most frequently expensive sheet metal bending tools called brakes are used to bend sheet metal but you can also complete this task without one.
The bending brake s design allows for a full 90º capacity in steel as thick as 16 gauge and can handle stock up to 18 in.
Makes bends to 90º.
The brake is compact and lightweight yet sturdy enough for professional production runs.
Easily clamps or mounts to workbench.
Handles material as thick as 16 gauge.
If you need to reheat the metal and redo the bend.
Grab the top of the metal with the pliers as the section you heated cools off and pull towards you gently at first.