About Sketch Diagnostics

The Sketch Diagnostics tool:

• Analyzes a sketch
• Identifies the conflicting constraints in a sketch
• Provides a logical solution that helps you to solve the errors in a sketch

A sketch becomes over-defined when you add a constraint or dimension that is:

• Already present in a sketch
• Conflicting with other constraints in a sketch
• Unnecessarily present in a sketch

When conflicting or repetitive constraints exist in a sketch, the over-defined elements and constraints display in red. In the following example, defining two lines as perpendicular and defining the angle at 90 degrees is over-defining the sketch. Also, specifying a length of 30 on both sides and calling both side equal is also over defining the sketch.

A Warning message displays with a Resolve button. If you click the Resolve button, the Sketch Diagnostics dialog box opens. The Sketch Diagnostics tool identifies the conflicting constraints that you can either delete or deactivate to repair an over-defined sketch. You can open the tool from the Resolve button in the Warning or from the constraint context toolbar.

A dangling constraint error can occur if you delete an entity that defines another sketch entity. In the following example, a sketch entity has a Parallel constraint to a Chamfer edge on a geometry.

When the chamfer is deleted, the Parallel constraint causes an error.

You might pick a new edge to use in the Parallel constraint or delete the sketch entity constraint. You can right-click the constraint and select Deactivate .