The Lock/Unlock constraint fixes a selected sketch element in its current position and the Unlock constraint removes any locked constraint.
To use the Lock or Unlock constraint:
- Select an endpoint or center point in the sketch.
- From the constraints menu, select Lock or Unlock.
Note: You can also directly selector on sketch points.
Learn more by watching the video below:
Locked sketch points are shown as a solid blue color. For more information, visit States of sketch points.