What kind of setback is used for a 90-degree bend with 2024-T6 at 0.032 inch thickness?

When performing a 90-degree bend in 2024-T6 aluminum sheet at a thickness of 0.032 inches, understanding the concept of setback, which is the distance from the centerline of the bend to the edge of the sheet, is crucial. The correct choice highlights that the setback would be excessive for a closed-angle bend.

In the case of a closed-angle bend, the setback is determined by material properties and thickness. For 2024-T6, a commonly used reference guides builders and fabricators on the appropriate setbacks. When the setback distance is too large, it can result in distortion or other issues that affect the integrity and shape of the bend. It's essential to adhere to the manufacturer's guidelines for bending parameters in order to avoid complications that can occur with excessive setback.

Thus, recognizing that the selected setback is excessive for a closed-angle bend indicates a careful consideration of these machining principles, and it ensures the bend maintains the desired angle without compromising the material's characteristics.