Skinning is a very powerful and useful method of lofting your component surfaces into the desired shape or profile. Skinning controls the behaviors of the four feature lines passing through each cross-section in components such as Stacks or Fuselages. Users have control over the before and after directions of the Top, Bottom, Left, and Right sides of each cross-section as well as the option of enforcing Skinning symmetry and/or continuity. As mentioned in other topics, it is almost always best to use fewer cross-sections and leverage skinning to achieve the desired shape rather than enforce many sections. This tutorial serves as an introduction into Skinning and will describe a few of the controls available in OpenVSP.