Remove 2 faces of rectangle

[Ali_Bagheri]

Any help would be appreciated dear friends.
I’m new in grasshopper and I would like to know how can I remove upper and lower face of a Box rectangle as it could be seen in the attached file.
cull.gh (8.7 KB)

[John_Brock]

Moved to grasshopper category

[Ali_Bagheri]

Unfortunately, I did not find it there. I need something like attached file.This is a Cylinder) .
cylinder.gh (2.6 KB)

[Jakinta (Jasmin Cubic)]

Hi Ali,

there are plenty of solutions for that very or similar tasks on this forum. Here is the first one apperared via Search tab in the upper right corner.

Selecting faces in buildings

Hey, so I have 95 buildings in grasshopper, and I want to work on them, but only in their top faces. as usual, I would use list item, and select just the top faces, but each buidling has different number of faces, so I can’t get all the top faces in once, and I don’t want to select each one separately. what can I do? thanks!

[Ali_Bagheri]

Dear Jakinta
Thanks for your response. The Link was good but my case is different. I work on surfaces not the Brep.
Best regrads
Ali

[Jakinta (Jasmin Cubic)]

Not correct. The case is exactly the same. Box is a Brep and what is a Brep than a collection of surfaces?! When you explode a Brep, you will get surfaces and then you can sort them via Z-coordinates…
or you can just extrude rectangle(curve, not a surface) and you will get desired surfaces without any exploding/sorting.

[Ali_Bagheri]

Thank you Jakinta
I try to use it, Please kindly look at the file I really confused and I don’t know what’s wrong?
Best regards
Quest.gh (11.9 KB)

[Jakinta (Jasmin Cubic)]

Quest.gh (9.3 KB)

[Ali_Bagheri]

Daer Jakinta
I’m really appreciate. You have been really helpful.
Best wishes

[Michael_Pryor (ekim)]

Please don’t duplicate posts. Linking other here.

How to remove 2 faces of a rectangle

Thanks a lot Sghier That was very easy way and helpful!