Hello, as part of a project for making a wing I am currently creating the ribs, where I have already created the shape they would take at any point in the wing in one part, and am using the intersection curve tool to get sketches of what the cross section would look like at two close points along the span in another part, and then loft them to create a rib of a small thickness. However, when using the intersection curve tool, I have noticed that the lines it creates does not always follow the shape of the body it is being used on. Whilst I have searched for others with similar problems and seen answers that it is purely a graphical thing, when it comes to lofting between two of these intersection sketches, the resulting rib is noticeably not the same shape, and so I was wondering if this is also a graphical problem or if there is another solution to this, as my graphical settings in SolidWorks are already set so everything is its highest quality. I am using SolidWorks 2026 if that helps.

Here is the intersection Curve sketch on the solid body

Here is the intersection curve sketch zoomed in to show where is diverges from the body shape

Here is the rib created from two intersection curves (in red) over the solid body which was used to create it

The rib (red) over the solid body from another angle