Grasshopper

algorithmic modeling for Rhino

I can't figure out how to trim this surface. I found a thread that shows it happening, but I can't seem to replicate this.

http://www.grasshopper3d.com/forum/topics/curve-trim-on-surface

Can anyone help me figure this out, I want to remove the circles from the polysurface? 

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You have to project your curves onto the object if you want to trim it.

By the way this is not a polysurface, but a single surface, which makes things easier.

Here is a way to do it:

With a BRep, you would have to adapt that a little.

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Thanks, is it possible to do the same with the surface subdivided like i had in the initial image?  I tried connecting the divided surfaces from the subsrf component into the project to surface but i think there has to be some kind of sorting. Any ideas?

Try this so.

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