Subtracting Sketch Profiles

In this Task 

A circle will be drawn in the center of the new shape.  The circle will then be subtracted from the main profile.

Before you Start 

The view is set to Front.

Workplane is set to Plane by World.

Subtracting Sketch Profiles

Ribbon : Modify | 3D Modifications | 3D Boolean | 3D Subtract

Default Menu : Modify | Modify 3D Objects | 3D Boolean Operations | 3D Subtract

Palette : 3D Model | Boolean & Facet | 3D Subtract

This boolean function subtracts a secondary solid from an intersecting primary solid (subtrahend)

 

This 2D Boolean function creates a new profile by subtracting the area of one intersecting region from another.

Both profiles must reside on the same Workplane.

Draw a 2D circle to a diameter of 20 using the center of the profile’s arc, shown below.

Select 2D Subtract from the menu options above.

At the prompt > select object to subtract from, select the rectangular shape, shown below left.

Right click and select Finish selecting from the local menu.

At the prompt >select object to subtract, select the circle, shown below right.

Right click, select Finish selecting.

Take Note 

There is no apparent change at this stage, but the circle’s area has been subtracted from the area of the profile. 

The Draft Render tool can be used to visually demonstrated the subtracted region, shown below.