Assembly Design > Using Assembly > Creating Components > Creating Solid Parts > To Create a Solid Part and Set Default Datums
  
To Create a Solid Part and Set Default Datums
1. In an open assembly, click . The Create Component dialog box opens.
2. Click Part, and then Solid.
3. Accept the default file name or enter a new file name, and click OK. The Creation Options dialog box opens.
4. Click Locate default datums. The Locate Datums Method area of the dialog box opens.
5. Select references from the assembly using one of the Locate Datums Method options:
Three planes
Axis normal to plane
Align csys to csys
Click the Related Link for detailed information.
6. Define features for the new part that will automatically use the default datum planes for their references.
If you used either the Three planes or the Axis normal to plane option, the sketching plane is the first plane that you selected.
If you used the Align csys to csys option, you must select the sketching plane.
Once you create a feature or quit its creation, the system places the new component in the assembly in the way in which its default planes are coincident (by the Coincident constraint) to the selected references in the assembly. In the case of Axis normal to plane, the system also aligns the component axis with the selected assembly axis.
You can use the Edit command on the right-click shortcut menu to modify the value of the offsets in the placement constraints, or redefine the component placement constraints entirely.