Measure 6 inches from each end and bend the metal 90 degrees using a sheet metal brake.
How to build a sheet metal tool chest.
To cut individual steel studs and tracks use straight cut aviation snips photo 1.
Insert your metal into your bar folder up to your marked hem line.
This will create two 6 inch sides and an 8 inch metal bottom.
So mark out two 4 x 3 1 2 sections of sheet metal and cut it in the metal shear.
Bend the metal to make the bottom and sides of the toolbox.
We start the box by making its sides.
Pull your handle to fold your metal over 180 degrees remove your now folded metal from the bar folder and place it back on the fold table with the fold facing up.
If you need to cut dozens of metal studs and tracks quickly use a circular saw fitted with a toothless carborundum metal cutting blade 7 when cutting individual steel studs or tracks with a circular saw cut on the closed or web side and support the piece tightly on sawhorses.
The sides will be 3 x 3 but we add 1 2 tabs on three sides.
A flat version of your box.
Pull your handle again to the 180 degree position to better flatten your double layered portion of metal.