i am trying to extrude a profile along the Curve. While doin that, it is working on one of the curve, but while attempting for multiple profile at once, the shape is getting deformed. i also want all the extrusions at the end to be capped.
Sweep1_script.gh (20.1 KB)
geometries are not internalized
please right click on both of those, chose âinternalise dataâ, save gh file and reupload 
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Extrude along the Curve.3dm (64.0 KB)
please find the attachment of rhino file here
Are you looking for this? Curves are internalized, no need for Rhino file.
Sweep1_2024Aug15a.gh (8.0 KB)
P.S. Oh, maybe not?
Maybe this? Doesnât make much sense to me.
Sweep1_2024Aug15b.gh (13.6 KB)
Or arbitrary shortened segments?
Sweep1_2024Aug15c.gh (11.4 KB)
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Or fillet the rail at an arbitrary radius? This makes the most sense to me.
Sweep1_2024Aug15d.gh (10.0 KB)
Normally, I would expect the rail to be in the center of the circle⊠Since geometry is internalized, these work in R7 and R8.
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Why donât you just pipe it capped?
No issues here.
Why would you be extruding multiple profiles at once? Or, I should ask what do you mean by that: multiple extrusions at once using the same curve or multiple extrusions for multiple curves at once?
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The practical reason for centering the circle âsectionâ on the rail is that you donât have to align frames with Z, which would otherwise be required when the rail has radiused segments.
Pipes and elbows. 
Sweep1_2024Aug15e.gh (16.4 KB)
By the way, better to create circles in GH instead of Rhino.
P.S. When the cat is away⊠Purple group displaces rail vertices vertically by random heights. Sweep1 fails with some values of the âDomain endâ slider but gets happy again when nudged to a different value. Or change the Random âSâ (Seed) value.
Sweep1_2024Aug15f.gh (22.6 KB)
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Thank you for all your help. really appreciate it.
i think i did not able to put my question properly.
the thing is. why iâm doin this is.
- i want to extrude some Profiles which are in the curtain wall facades.
- i have the profiles in polyline curves, which are in multiple numbers.
- currently iâm able to extrude only one polyline at a time.
- when iâm trying to select multiple curves at once, the output is not coming which i wanted.
uploading the required updated files.
rhino sample.3dm (782.8 KB)
Sweep1_script_Updated.gh (47.2 KB)
currently while sweeping one one polyline each is taking a lot of time.
so want to select all the polylines at once.
also the profile is in particular shape so iâm not able to use the pipe command.
At this point trying to make a sweep or loft or any of those work will continue to be cumbersome because of the sharp corners of your rail curve. Tried a couple of things, gave up, and then I had another idea with BoxMorph!
See if it helps:
Sweep1_script_Updated.gh (71.8 KB)
NOTES:
Open the file, save your work, then connect the target (twisted) box for the morphing to happen - I left it disconnected so the file loads fast.
I didnât look much into the rotations of the profiles as Iâm not 100% sure I grasped your goal or what logic should these rotations carry - nonetheless the twisted boxes can get more twisted I guess. They are formed by actually sweeping a âbounding rectangleâ of your profiles, meaning you can tweak this sweeping by adding (and rotating) more sections.
Cheers!
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Mmh, I was doing exactly this (plus some revisions, shown below) but it wouldnât work on R7, which left me perplexed.
Came back to R8, different machine - now it works, lol.
So,
âŠfor this to work, a couple of tweaks:
Sweep1_2024Aug16b_CAP.gh (58.4 KB)
Thank you so much for the help.