Part Modeling > Datum Features > Datum Axes > To Create a Sketched Datum Axis
To Create a Sketched Datum Axis
When you create a geometry centerline in a sketch-based feature, the new line exists as a regular datum axis in the Standard application. Using a geometry centerline is the only way that a centerline created in Sketcher can convey feature-level information outside of Sketcher.
1. Click Model > Sketch. The Sketch dialog box opens.
2. Select a sketching plane and set its orientation, or accept the default orientation.
3. Click Sketch. The Sketch tab opens.
4. Click Sketch > Centerline in the Datum group.
5. Click twice in the graphics window to place the centerline.
You can create multiple geometry centerlines in the same sketch.
Right-click a centerline in Sketcher to toggle between Construction and Geometry.
6. Click OK.