Hi Nikola! I think I know where the problem lies. Some of the rectangles didn't get projected completely on the surface. Therefore generating extra control points (the ones you highlighted) and therefore messing up your linework. Make sure your curves for lofting are flat and projected on the XY plane (0,0) Or to make sure move them like 1 cm down under the 0,0 XYplane. This to ensure all the rectangles fall onto the surface when projected, See attached image. I hope this works for you, let me know! Cheers! Arie

Could the reason for the excess number of point on the base be a result of a wrong line work for the loft surface. Attached is an image of the line work used in my model. Please comment and let me know if you find any trouble resulting in the problem that we are facing. What is more, is there a way I can sent you or attach more than one image to you. My believe is that it will speed up the process and make everything more clear to you. Nikola

Greeting Arie! First, Thank you for the rapid answer.Yes I did connect the output from the "discontinuity" component from both the original and the projected rectagles. Also none of the components are flattened. Attached is a close up on the base of the model. I believe there are points that should not be projected on the base curve... thus resulting in the whole mix up of the lines. Nikola

Hi Nikola! I'm not sure what the problem is... Did you connected the output from the "discontinuity" component from the original rectangles and the discontinuity from the projected rectangles @3.15? Also could you make sure nothing is flattened by accident? Let me know if this worked, cheers! Arie