Surfacing... just a nightmare

Yes I know the problems, Its the solutions that we are discussing…
You guys are making my point

Did that. Now im here. I backed away from the car body because that was clearly the high bar. Now im working on a very simple bathtub shape and I find myself reworking and reworking my approach to navigate all the pitfalls mentioned.

The solution to the first classic loft problem is this:

Notice the TWO CURVES AT THE FRONT THAT DO NOT TOUCH yet make a perfect underside surface… (no discussion about that nifty little trick I note)

k

Only minor surface anomolies

LoftTechnique.gh (7.9 KB)

Then there is this approach with a surface-

Also discussed here:
Boat hulls with smoothly curve stems - how to model?

The problem is that you enter TSPLINES territory and the inherant problems really fast (ask Kyle, THE TSplines expert) . (also not discussed)

So where is Mr. close the thread who wants a problem to solve?

Start with the Loft of three curves I posted, all identical and create a nice smooth surface like the one shown above and DESCRIBE HOW YA DID IT !

HOW do you chop of part of a curve such that the surface is not ugly at the curve end and produces a surface with degree 3 isocurves. Then we can move on the more complex problems like this:

A brilliant solution, but difficult to merge into surrounding surfaces. This needs a geometric solution.

This is thread about the APPROACH to modeling complex problems like this.