I am having many problems when I tried to have a similar section for different shapes/paths (closed, and opened) 1- I used different definitions for closed and open shapes/paths 2- I cannot have more than one paths in the open shapes (attached screenshot 1A, 1B) 3- I cannot have the same section …

Without your code and internalized geometry (or Rhino file), there isn’t much anyone can do. [image] Help Us Help You Grasshopper Asking questions and getting answers is what this forum is all about. Although people are generally very helpful, there are things you can do …

Dear Joseph for your reply. And sorry this is my first time to ask a question here. So, how can I upload the file? Can I attach it here? Or I need to have a new post. Thanks

Did you read this page? How to ask effective questions You can edit your original post and add it there. It’s a good idea to read a forum for a day or two before posting, so you understand the “culture” and norms, eh?

All you had to do was graft the input on your last version and it works for all cases… except for closed ‘Path 4’, which fails for unknown reasons. Not sure I want to spend the time to find out about that one… closed-Open_shapes_2019Jun29a.gh (11.9 KB) (geometry is internalized, no need for Rhi…

[image] zuhairnassar: All you had to do was graft the input on your last version and it works for all cases… except for closed ‘Path 4’, which fails for unknown reasons. Not sure I want to spend the time to find out about that one… Many thanks, Could you please explain why I need to graft th…

The short answer is because you want to apply the same section curve (star or polygon) to many different rail paths. Beyond that, it’s a complex subject. It becomes intuitive with practice.

Failure in a section follows shapes

Grasshopper

Joseph_Oster June 28, 2019, 3:16pm 2

Without your code and internalized geometry (or Rhino file), there isn’t much anyone can do.

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Failure in a section follows shapes

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