The SOLIDWORKS Split Line tool is used to project an entity (sketch, solid, surface, face, plane, or surface spline) onto other surfaces or curved/planar faces. You are also able to split faces on multiple bodies with one command.
The Split Line command comes equipped with 3 different modes to utilize:
Splits the face at it’s outermost projected edges normal to your specified direction. No sketches needed!
Projects a sketch onto a surface. Projection Split Lines can be pattered!
Splits faces with an intersecting solid, surface, face, plane, or surface spline. It creates a continuation for partially intersecting faces based on natural or linear geometry!