Spline from 2D coordinates


I want to create a spline from a set of coordinates from an airfoil plotter.

I know I can use other CAD software to create a dxf and import it to Shapr3D.

It would be nicer to do it in Shapr3D because if I import the dxf I get a set of polylines that don’t create a nice surface on extrusion.

Is there an other way to do that?

Kind regards,

Image is an extruded dxf Sketch from AutoCAD.