The intention is to build a boat out of 0.08: sheet metal aluminum. According to a given plan drawing, I modeld the boat (SEE ATTACHED JPG). The idea is to extract a flat pattern for each segment of the boat (5 segments) , cut , bend and weld them together. My problem is not being able to model in solid works the boat segment as sheet metal. Because the profile is created from Spline and any time I attempt to create a sheet metal I get this message the (sketch contain an entity with unsuitable geometry). Is there any other way to do it?