In this tutorial, you will create a Corner Trim feature.
- Download and open the Corner_trim part file from the companion website.

- On the CommandManager, click Sheet Metal > Flatten
.

- On the CommandManager, click Sheet Metal tab > Corner drop-down > Corner-Trim
.
- Select the corner edges one-by-one (or) click the Collect all corners button.
- Select Circular from the Relief type drop-down.
- Change the View Orientation to Top.
- Zoom-in to anyone of the corners and notice preview of the corner trim. By default, the center of the relief is located on corner.

- Check the Centered on bend lines option to move the center to the intersection of the bend lines.

- Change the Radius value to 5.
Notice the Ratio to thickness option below the Radius box. This option allows you to specify the relief size by entering the ratio value to the sheetmetal thickness.
- Select Square from the Relief type drop-down.
Notice that the relief is changed to square.

- Check the Add filleted corners option.
- Type 1 in the Fillet radius box.

- Click in the Corner Edges selection box under the Break Corner Options section.
- Select the sheet metal corners to break (or) click the Collect all corners button to select all the corners.
- Select the Chamfer icon from the Relief type section.
- Type 5 in the Distance box.

- Click OK on the PropertyManager.
- Click the Flatten icon on the CommandManager to exit the flatten state.
Notice that the corner trims are visible only in the Flattened state.