Hello Karsten

First of all thank you for the explanations....
I would like to ask you some things that are not
very clear

1- theBlend object surfaces are sweep, loft etc etc
must always be closed (solid) ???
Name BrepSubObj Node- does not recognize the surfaces
as Brep? ........
2- I need to clarify if, once connected my
Surf with BrepNameSubObj- Node, run Elephant, I have to selected
the edges which appear to me to video ,before or after
It made the final connection with the final Blend -Node ......

3- Blend curves, Curves Joint , Rebuild Curve, I think they are Nodes
absolutely essential for the growth of Our Elephant,
and given the Your ability to create Scripts, I think you should give it a thought

Have a Nice Day and many .. many .. Thanks
al