I have used extractIsocurves to get these profiles for the side of an aircraft cowling, drawn in my early days, to attempt to tidy up the surface before smash. The existing cowling created a smash shape not befitting the source as I had hoped.
as they feature an untidy array of points, they need redrawing with a limit set to so many points. I recall profiles are best with the same number of points, I cannot remember the command to do so.
The kink at ‘A’ is correct , it becomes none over a distance of 100mm or so heading across the panel left to right, but not that at B, that one can flow better.
I also wonder if its best to sweep left to right or top to bott due to the S curve at top. The hole doesnt matter, I can do away with it.
refine cowling for smash.3dm (311.5 KB)