I am creating a closed swept surface using two closed loop guide curves and (trying but failing) one closed profile.

I managed to create two separate surfaces but do not know how to turn them into a parent curve editable solid.

The whole thing should be simple and clean but for some reason I cannot get it done. Help is not much help... Attached pictures illustrate the issue. I'd appreciate some pointers or is there a book or website available that explains ICAD surface creation in depth?

Mark



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