Sketching a Boss

To create additional features on the part (such as bosses or cuts), you sketch on the model faces or planes, then extrude the sketches.

You sketch on one face or plane at a time, then create a feature based on one or more sketches.

Click Hidden Lines Removed on the View toolbar.

Click Extruded Boss/Base on the Features toolbar.

Move the pointer over the front face of the part.

The pointer changes to , and the edges of the face become highlighted to show that the face is available for selection.

Select the front face of the part.
A sketch opens on the front face of the part. The Sketch toolbar commands appear in the CommandManager.
Sketching a Boss (continued)
Click Circle on the Sketch toolbar.
The pointer changes to .
Click near the center of the face and move the pointer to sketch a circle. Click again to complete the circle.
Dimensioning and Extruding the Boss
To establish the location and size of the circle, add the necessary dimensions.
Click Smart Dimension on the Sketch toolbar.
Select the top edge of the face, select the circle, then click a location for the dimension.
A closer look at dimensioning
Double-click the dimension, set the value to 60 in the Modify dialog box, and click to dimension the circle to the top edge of the face.
Repeat the process to dimension the circle to the side edge of the face. Set this value to 60.
Dimensioning and Extruding the Boss (continued)
Still using Smart Dimension , select the circle to dimension its diameter. Move the pointer around to see the preview for the dimension.
When the dimension is aligned horizontally or vertically, it appears as a linear dimension; if it is at an angle, it appears as a diameter dimension.
Click a location for the diameter dimension. Set the diameter to 70. Add the two other dimensions as shown.
The circle turns black, and the status bar indicates that the sketch is fully defined.
Click Exit Sketch on the Sketch toolbar.
The Extrude PropertyManager appears.
In the PropertyManager, under Direction 1, set Depth to 25, leave the other items at the defaults, and click OK to extrude the boss feature.
Extrude2 appears in the FeatureManager design tree.

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Please see below to simple application