In the context of bending sheet metal, what does "setback" refer to?

In the context of bending sheet metal, "setback" refers specifically to the distance between the edge of the metal and where the bend begins. This measurement is crucial in the design and fabrication process, as it determines how much material is needed on the flat part of the metal before it transitions into the bend. Understanding the setback is essential for achieving accurate bend placement and ensuring that the finished piece meets dimensional specifications.

The setback helps in maintaining the integrity of the bend and allows for proper alignment when multiple bends are involved in a single piece. When calculating setbacks, engineers and fabricators consider the bend radius and the thickness of the material, as these factors influence how the metal will behave during the bending process.

Therefore, recognizing the definition of setback is key for anyone working with sheet metal fabrication, as it directly impacts the overall geometry and functionality of the final component.