I would suggest splitting the 3 planes in half where the 4th vertical plane meets them. Then you could loft either half of the sketches, using the vertical sketch’s spline as a guide.
GroMark,
Thanks very much for your reply.
I did as you suggested and cut the 4 planes in half but was unable to work out how to fully loft or loft and adjust the control points to suit the required geometry.
I may have to raise a support ticket due to my limited knowledge of the software.
Regards,
in the history, the sketch defining the surface must be placed before the sketch defining guides, so the guides can refer to them
when you enter the sketch of a guide, the guide’s end points must be green, indicating they are connected to the surface curve (underlined in orange in the picture below). If they are not, move the points back and forth and they will snap to the curve and turn green.
PEC - you are an absolute champion!
Thanks very much for the lesson - you make it look so easy but expect that this comes with a familiarity with the software.
simon