Share Email Facebook Twitter LinkedIn To Lock and Unlock Layers (AutoCAD Mechanical Toolset) Click Home tabLayers panelMechanical Layer Manager. Find In the Mechanical Layer Manager, select the layer to lock or unlock. In the row corresponding to the layer you want to lock/unlock, in the Lock column, click the lock icon. Click OK. Related Concepts About Creating and Customizing Mechanical Layers (AutoCAD Mechanical Toolset) Related Tasks To Create a Layer (AutoCAD Mechanical Toolset)To Create a Layer From a Layer Definition (AutoCAD Mechanical Toolset)To Delete a Layer (AutoCAD Mechanical Toolset)To Delete a Layer Definition (AutoCAD Mechanical Toolset)To Freeze and Thaw a Layer in a New Viewport (AutoCAD Mechanical Toolset)To Reset Layers to Default Settings (AutoCAD Mechanical Toolset)To Change Properties of a Mechanical Layer (AutoCAD Mechanical Toolset) Related Reference Commands for Working With Mechanical Layers (AutoCAD Mechanical Toolset)