This add-on provides tools for generating rail sweep and profile surfaces directly within Blender's Edit Mode. Users select the vertices of rail curves and generation curves to execute a sweep. The tool supports multiple curve configurations, allowing for a single generation curve to sweep along one or two rails, or for a transition surface to be generated between two generation curves guided by a single rail.

Adjustments are made through a dedicated panel where users can fine-tune the resulting geometry. Parameters include sweeping mode selection, a parallel factor to toggle between sweeping parallel or following the rail's tangent, and options to swap the generation and rail curves. Additional controls allow for twisting along the sweep, maintaining uniform thickness for profile surfaces, and manually flipping the normals of the generated mesh.