How to delete Duplicate curves?


Hi all im having trouble deleting duplicate curves that appear on a complex 3d model, ive tried SelDup but doesnt get all of the curves.#

Any help? i did also try run a rhinoscript i found by Chris Tietjen but also was unsuccessfull as it still leaves alot of curves?

Im hoping to pipe with t-splines but the additional curves are proving problematic any help?

Thanks in advance


(John Brock) #2

SelDup is about as good as it gets for automatic tools. The command was created because so many DWG/DXF files have extraneous perfect duplicates. If a curve has it’s direction reversed or anything else so it isn’t a perfect duplicate, then SelDup won’t find it.


Thanks John, would a rhinoscript do the trick if so are there any sample scripts that perform this function?

(John Brock) #4

Sorry, scripting is beyond my pay grade.
I have no idea how you would go about comparing similar curves within some control parameters.


HI John

So i used Grasshopper plugin Kangaroo and used the removeDuplicateLines tool and specified a tolerance worked great and very easy.



(Anita Pawlik) #6

Hi Joe I am new to grasshopper could you be a bit more specific on how to delete duplicate curves on a rhino model? Much appreciated!

(Pascal Golay) #7

Hello - probably best to post a new question on the GH forum here: