Getting the hang of MoI although it took a few goes to get the Lofting right. I was trying to do the Loft with two "horse-shoe" curves, instead of four rail-curves and got fails. Amazing how MoI is able to create the surfaces from the rails!

Question though: the lines on the model below, I can't seem to remove them (MoI ignores delete). The model is showing as a solid and although the lines highlight they will not delete. Not a problem but wondered if there was a reason?