We can consider Shapes to be “closed’ or “open.” Of course, any open shape can be closed and any closed shape set to open, but some shapes lend themselves to one or the other. For example, a gear shape, would normally be closed while a molding profile would normally be open.

Closed Shapes
















Open Shapes

Column Profiles the are Lathed


Wall Sections the are PlanSwept


Moldings that are PlanSwept