Boss or Cutout Extrude
A sketched closed line chain or cross-section may be extruded. Extrusion can be used to add or cut out material.

Create a new extrusion feature
- Create a New Plane Sketch.
- Sketch the shape to be extruded.- The extrusion will be available if the lines on the sketch form a closed line chain.
 
- Select .
- Select either or according to whether you want add or remove material.
- Select .
- Enter the extrusion properties and select .
Note: 
    - You can use a cutout feature to divide a part by selecting   Make New Part. Make New Part.
- Edit the data of a feature by first selecting the face formed by the feature, then selecting the context-sensitive function Edit Operation.
- You can also edit the feature sketch by selecting the sketch in the feature tree, then selecting the context-sensitive function Edit Sketch.
Extruding a cross section
You can also create an extrusion based on a cross section.
- Select the face of the cross section.
- Select either of the following: Extrude> Boss. Extrude> Boss.
 Extrude> Cutout. Extrude> Cutout.
 
- Define the extrusion properties in the dialog box.
- Select OK.
Example: A sketch is extruded into a part
- Operation performed on the sketch:  Boss > Boss > Extrude Extrude

Example: A notch extruded into a part
- Operation performed on the sketch:  Cutout > Cutout > Extrude Extrude


 OK
 OK