Hello thanks for helping me I am just at a basic level of grasshopper, I can not do a perfect closed structure from loft made of multiple line I can not fix it by cap holes or boolean difference, when the line change the direction it remains a hole right on the corner of each break direction.unnamed3.gh (20.2 KB) Untitled2.3dm (135.1 KB)
I tried my maximum with your file only (I don’t want to make my own curve). So still something will not to be perfect. I advise you to correct your railing curve. HTH.
unnamed3 BVR re.gh (33.1 KB)