The patterns for a cardboard box will look very similar to what you need to plan out for the sheet metal box.
How to make a sheet metal box with out tools.
The box i have my students create in class ends up being 5 5 x 2 x 3 5.
It shows the layout cutting forming and three different options for welding the box togethe.
How to make a sheet metal box.
Brian ruggles diy repurpose.
1 first you want to make an expanded template for your box out of cardboard paper etc.
I have a graph paper drawing in the pics below but its not for this box 2 trace your template on to your piece of sheet meta.
To make things easy for my students i designed our classroom box so it would be able to work on the size of a standard 8 5 x 11 piece of paper.
A flat version of your box.
I have a graph paper drawing in the pics below but its not for this box 2 trace your template on to your piece of sheet metal as pictured i suggest 20 22 gauge steel.