It's the same principle..
But script automatically in one click make curves smaller. I set it to 150 times smaller, and every time I run script I get curves smaller in 150 times.
It's useful if you make organic shapes using method I showed.
> Is it possible something like this, select first 3 curves one by one (where undercut is )
> to let loft know direction and other curves select at once?
I think that could be possible to try sometime in the future.