Lock

The Lock constraint , is used to lock the placement of a related child feature. Like all other constraints, Lock constraint, as a container, only accepts geometry element when drag and drop. If you drop in a Vertex or linear Edge, then the owner feature is allowed to be rotated around the geometry element. These types of locking is more useful when creating skeleton sketch If you drop in a non-linear Edge or Face, then the feature is completely fixed within the owner assembly with this constraint. If no Lock constraint is found in an Assembly, then the feature that owns the first element of the first constraint is fixed. When you try to move a Locked part, all the other parts will re-settle around it. You can prevent accidentally move a locked part by toggle the , which will prevent the mover button from activating.