Openings in louvre screen

each fin is made by 5 lines rotated at different angles lofted together. I want to add an opening like in the picture ( did it in Rhino). using grasshopper how could I do it ? I was thinking to separate the list of curves that need to be moved, move them and merging again to loft them with the other curves. but I get issues and not good result… any help on this?


rotating stripes_gradually twisting (36.1 KB) twis.3dm (100.5 KB)