Sheet Metal Box Layout

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Sheet metal box layout.

Use the corner notcher to cut out any right angles. Box bending can be rather tricky with sheet metal because of the geometry of a press brake. Sheet metal boxes are two part enclosures made by cutting metal sheets and then bending the resulting parts using a press brake to form a 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 3 cut your piece into the same shape as template.

Typically the upper beam or punch holder will get in the way of very deep boxes. Then all you need to do is cut out the pattern make the bends and spray on a coat of paint. A flat version of your box. Layout line on your sheet metal to designate where you will be cutting and bending.

The patterns for a cardboard box will look very similar to what you need to plan out for the sheet metal box. You will be bending the four sides up to make the walls so measure out equal lines parallel to the edges. It s easy to cut and bend but still has plenty of strength. 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.

These lines will mark where the walls are bent. When bending with large returns there are a few tricks outside of just tooling selection. The box i have my students create in class ends up being 5 5 x 2 x 3 5. With the patterns on the following pages and your sheet metal in hand it s time to lay out the project.

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