Select the profile to be extruded.
Click Pad
in the Sketch-Based Features toolbar (Pads sub-toolbar).
The Pad Definition dialog box appears
and the application previews a pad with a default dimension
value.
In the Type box, set the Type
option to Up to surface.
Select the vertical circular face. This face belongs
to the same body as the existing pad.
Using the Up to surface option, you can select
a face belonging to the same body as the sketch or a face belonging
to Part Body.
The face trims the extrusion.
An Offset option
is available in the dialog box. Enter -30 as the offset value. This
offset is the distance between the surface and the top face of the pad
to be created.
Optional: Click Preview to see the result.
Click OK.
The pad is created. The specification tree indicates this
creation.