To Create Profiles for Extrusion and Revolution Mass Elements

Use this procedure to define a profile from a polyline to create either of the following mass elements:

• Extrusion, in which the shape of the two-dimensional (2D) profile is projected to create a 3D mass element
• Revolution, in which the 2D profile is revolved around its X axis to create a 3D mass element

You can draw more than one polyline within the outermost polyline to create voids in the resulting mass element. Polylines cannot intersect or overlap.

1. Draw one or more closed polylines in the shape you want to extrude or revolve.
2. Select the polyline, right-click, and click Convert To Profile Definition.
3. Enter c (Centroid) for the insertion point of the profile.

   The insertion point of the profile is aligned with the centroid of the mass element.

4. Press Enter to specify a new profile definition.
5. Enter a name for the profile, and click OK.

   You can now use the profile as an Extrusion or Revolution mass element.