I am trying to create a truck door with a hole for the window.

Tried and failed:

1. Lofting the 2 curves - failed

2. Projecting the window curve onto a planar trim (that defines the whole door) and then trimming - failed.

3. I cut rhe 2 curves into 4 pieces each to make a boundary or sort but as I got more than 4 I tried fillet and failed.

I am trying to create 2 curves (in pink) to loft

the zoomed window you see is what I try to Fillet - and fail and I tried intersecting and extending - everything fails !!!!

I haven't had this kind of thing in Rhino

I AM DESPERATE - Have I paid 2000 U$ for a piece of nurbs-amateur junk or am I doing it all wrong ?

Nir