Part-Editor - Constraints Menu and Toolbar
In the Part-Editor, use the commands in the:
|•|| to add sketch-elements. The toolbar is to the left of the graphic-area.|
|•|| : to add Constraints to|
|o||a sketch-element, and also|
|o||its start-Point, its end-Point, and a centre-Point.|
To DELETE a Constraint you must show the Constraint in the .
|1.||SHIFT+CLICK a sketch-element, its start-Point, its end-Point, or its centre-Point, as required |
The sketch-element and Constraints show in the Selection-Window.
|2.||Right-click the Constraint|
In the contextual-menu
Part-Editor: Constraints menu
Part-Editor: Constraints Toolbar
In the Part-Editor, the is to the RIGHT of the graphic-area.
MERGE-POINTS : Deletes a Point. You cannot remove a 'Merged Point'.
|•||Use Merge-Points to join sketch-elements end-to-end, and to remove one of the Points.|
|•||Use Merge-Points to make a .|
COINCIDENT Points : Does not delete a Point. You can delete a Coincident-Constraint later and move the Points apart again.
|•||Use a Coincident-Constraint to move together two Points, or a Point to a Line, or a Point to an Arc or Circle. |
|•||Use Coincident-Constraints for construction geometry.|
You cannot over-constrain a sketch-element in the Part-Editor (SolidWorks allows you to over-constrain, but you are given a warning).
A Point has 2 degrees-of-freedom (DOF). It you add a 'coincident constraint' between a Point and a Line, you remove 1 DOF, and 1 DOF remains. The Point can slide along the Line.
You cannot then add a new constraint between the same Point and a Point at one end of the Line. A constraint between a Point and a Point would remove 2 DOF, but only 1 DOF that remains.
|1.||SHIFT+CLICK a sketch-element in the graphic-area |
The sketch-element and constraints added to it, show in the Selection-Window.
|2.||Right-click the constraint in the Selection-Window|
|3.||Click Delete in the contextual-menu|