Sweep1 fails where extrude along doesn't but orientation wrong

Hi all, I’m in Rhino 7
I have used extrude along but the orientation of the rectangle as you can see doesn’t stay perpendicular to the curve.
Sweep1 works but doesn’t correctly navigate the end points so creates the two weird looking frames that don’t follow the same path as the others, infact leaves the rails completely.
I’d prefer to solve the Sweep1 tool than the Extrude along, but ultimately need a solution that works. Any thoughts gratefully received!


Hey, split the Curve on the marked position, create planes on every endpoint of the curves. Orient the profiles and then sweep every segment seperatly. This will work.
Greetings, Leon

Thank you Leon, is this possible in GH? I need the model to be parametric. If so how please?

please drag your gh file into the textbox where you write messages, give it a few seconds to upload succesfully, then post it

be sure to have internalized geometries if necessary, here is how to do that:

Thank you!
SubD14 forum.gh (8.7 KB)

Hey, as @inno stated, you need to internalize your brep before sending the gh script. After you internalize the geometry, you can just open the gh file without the 3dm file. (Right now the referenced brep is missing). Greetings Leon