About Parting Surfaces
A parting surface is a surface in the model that you designate to split a workpiece, die block, or another volume. A parting surface is made up of a set of features, with the first feature called the base quilt. Any additional features that you create using operations such as trim, merge, and extend are called patches. Before completing a parting surface, you must merge all the patches.
A parting surface must completely intersect the volume and cannot intersect itself. When creating a parting surface, make sure to fill any loops lying on the parting curve.
You can create a parting surface with the following methods:
• Copying reference geometry
• Using engineering tools such as Round and Draft
• Using base feature tools such as Extrude, Revolve, and Sweep
• Using automatic parting surface creation methods such as Skirt, Shadow, and Shut Off