Sweep on multiple curves

Hello everyone,
I am trying to sweep a rectangular section on my curves but the sweep is going weird! Can somebody help me?
sweep.gh (19.5 KB)

I think you’re mistaken how sweep works. Sweep takes the sections and moves it in the shape of the rail, it interpolates between sections if there are multiple. Therefore your sweep will always pass thru your sections at the location you defined them
I think what you’re after is this:

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Check this as well…

sweep_re.gh (25.4 KB)

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Thank you so much, Victor and Kim :slight_smile: