This feature activates a plastic part, or enters the sub environment so that you can continue to design the core and cavity feature.
If there is only one part, it is automatically active. If there are multiple parts, you can choose which part to activate.
Mold Design provides a way to import an existing core and cavity. Another design team or other CAD software can create the existing core and cavity.
An existing core and cavity need not include a plastic part before importing.