lofting with only guide curves

Dilemma
There is two spline curve in two different plane , how to make loft with these two cure and without any section profiles
or in another word
how make body with converting one spline curve to another?

https://forum.solidworks.com/message/778280

2 Answers

Boundary Surface tool is pretty much perfect for this.
But what Johnathan suggested should also work fine

Maybe your sketch is not just a spline? Do not understand the question?