To Create a Cut Using an Element as the Profile

Select the Cut Feature tool.
The Cut Feature tool settings window opens.
Modify the settings for the cut as required.
Select the solid to cut.
Select the cutting element.
An arrow shows the directions for the cut. If Both Directions is selected, two arrows appear: a green arrow for the Through Direction, and a red arrow for the Back Through direction.
Move the pointer until the arrow points in the desired direction for the cut, and enter a data point.
Enter a data point to accept the cut.
(Optional) To select additional elements to use for cutting profiles, hold <Ctrl> and enter data points to select elements.

Upper left: Original geometry. Upper right: Resulting geometry when these settings are used: Cut Inside Profile on, Both Directions off, Through All Faces. Lower left: Resulting geometry when these settings are used: Cut Inside Profile on, Both Directions on, Through All Faces. Lower right: Resulting geometry when these settings are used: Cut Inside Profile off, Both Directions on, Through All Faces.

Left: The original geometry is a feature-driven Slab with a DD Design profile. When an open profile is used, such as the arc shown on the left, it is extended tangentially from its endpoints to intersect the solid. Right: Cut produced from this profile.