Choose Home tab→Sheet Metal group→Hole list→Cut
.
On the Cut QuickBar, set the Profile option to Open
.
Select the region(s) to define the cutout.

(Optional) Click the directional arrow to change the feature direction.

Type a value for the cutout extent or right-click for a dynamic preview of the cutout.

Change the settings to update the preview or right-click to place the cutout.
