Add a Concentricity Constraint

General

• A concentricity constraint can be added to circles, arcs and points.
• You can also use cylindrical and conical surfaces as the other party of the concentricity constraint.

Add a concentricity constraint to a 3D sketch

1. Select the function 3D Sketch | Constraints | Add a concentricity constraint or
   • select the context-sensitive function Constraints > Concentric
2. Click the first circle, arc or point.
   • This circle or arc shall will remain in place unless the element shown below is bound in place with constraints.
3. Click the second circle, arc, point, or cylindrical or conical surface.
   • This circle, arc, or point moves to be concentric with the first circle, arc, point, or the axis of the cylindrical/conical surface.
   • If the last-clicked element is locked in place with constraints (such as a cylindrical or conical face of a part), the first-clicked element will move so that it is concentric with the second circle, arc, point, or cylindrical/conical surface.
4. Repeat steps 2 and 3 to add new concentricity constraints
5. Stop adding concentricity constraints
   • Select another function or
   • press the V key or
   • press the Esc key or
   • click the middle mouse button.