In this example, you replace an arc with a spline.
To replace a sketch entity:
- Open install_dir\samples\whatsnew\sketching\replace_entity.sldprt.
- In the FeatureManager design tree, select Boss-Extrude2 and right-click Edit Sketch
.
- In the graphics area, use the rotate and zoom tools to view the sketch as needed and select the spline near the top edge of the sketch.
- In the pop-up toolbar, click Construction Geometry
.This command converts Spline1 from construction geometry to a solid curve.
- Select the arc and in the pop-up toolbar, click Replace Entity
. 
The Replace PropertyManager lists Arc2 as the entity to replace.
- In the PropertyManager, click Make Construction.
- In the graphics area, select Spline1.
- Right-click
and close the sketch.
The model automatically rebuilds.
Spline1, the new sketch entity, maintains all the dimensions and relations that had been defined for Arc2.
