Primitive
Use the Primitive tools to create a single PolyNURBS solid or surface, either around a selected object or as the starting point for a new model. This is the tool you should start with if you want to build PolyNURBS geometry without wrapping or paving.
Create a PolyNURBS Solid
Create a PolyNURBS block in space or around a solid part.
- 
                On the PolyNURBS ribbon, select the PolyNURBS Solid
                        tool.

 - 
                Choose from the following options:
                
- If there is already geometry, select a solid part to surround with a cage. A PolyNURBS is created around the bounding box of the part.
 - If there is no geometry, you don't need to do anything. A PolyNURBS block is created automatically.
 
 - Edit the PolyNURBS as needed. Right-click and mouse through the check mark to exit, or double-right-click.
 
Create a PolyNURBS Surface
Create a 2D PolyNURBS surface in space or around a surface part.
- 
                On the PolyNURBS ribbon, select the PolyNURBS Surface
                        tool.

 - 
                Choose from the following options:
                
- If there is already geometry, select a surface part to surround with a cage. A PolyNURBS is created around the bounding box of the part.
 - If there is no geometry, you don't need to do anything. A PolyNURBS surface is created automatically.
 
 - Edit the PolyNURBS as needed. Right-click and mouse through the check mark to exit, or double-right-click.