As an alternative approach, you can use the mesh offset tool in the Edit Mesh toolset to create a skin reinforcement by sharing the nodes of the offset shell with the underlying mesh of an orphan mesh part. However, the equivalent offset shell does not appear in the Model Tree as a skin because using the offset shell to represent a reinforcement skin is just one of many potential uses of the offset shell. The advantage of the mesh offset tool is that it allows you to create multiple reinforcement layers (the skin reinforcement tool in the Property module allows you to create only a single reinforcement layer). If you are creating more than one layer of reinforcement skins, you should specify a distance of zero between the layers so that the layers can share nodes. If your skin can be defined as a single layer, creating the skin in the Property module is the preferred approach.