Issue with DupEdge

Hi all, I think I have a rather simple issue but as I’m a beginner I don’t really know how to solve it.

I have a open polysurface and would like to get the DupEdge of the rear side in one go – the blue curve on the right.

However, even though it is one single polysurface, when I apply DupEdge, I’m forced to click every single “mini”-curve to get the whole curve – red curves on the left.

Is there a way to fiddle things to get the blue curve in a faster way? Maybe by manipulating the polysurface? or something else? (At the moment, I’m going around this issue by performing DupBorder then splitting the curve to get the blue curve but it’s very frustrating as I need to do this a lot of times…)

Thanks a lot!

20220109.3dm (3.0 MB)

You could do dupborder

Hi @miano ! Thanks! But as explained on my initial post, while DupBorder works, it requires a few extra steps and so was wondering if there was a way to make DupEdge work instead by maybe manipulating the polysurface?

Start DupEdge command.

In a suitable view use a “window select” rectangle to select the desired edges. The window select rectangle only selects items which are entirely inside the selection rectangle. Move the cursor from left to right to make the selection.

https://docs.mcneel.com/rhino/7/usersguide/en-us/index.htm#html/ch-03_selectingobjects.htm%3FTocPath%3D_____3

Complete the command.

Thank you so much David, exactly the kind of small trick I was expecting :relaxed:

Just to piggy-back onto David’s comment, the Lasso command can be nested into DupEdge (and others) for when the alignment of the edges does not work out well for a rectangular selection.

-Pascal

Will give it a go! Thanks so much :relaxed: