@Pirate_Jack (Service) posted a new topic, subject "Issue with TRIM/Split complex objects". It read:

   Hi there, I am trying, so far with no success on this particular solid, to split the solid into two halves. I managed to do it with similar (simpler I would say) objects but this one is a pain, and I need some help please. Thanksobject.3dm (15.6 MB)

To which @DiegoKrause (Diego Krause) replied

    can you upload a v5 file?

After which, @Pirate_Jack (Service) added

    Hi there, here it is. cutting r5.3dm (15.5 MB)  
    This is the effect I am looking for. Thanks. 
    
    Screenshot_31447×661 80.2 KB

So @DiegoKrause (Diego Krause) replied

    its a very complex geometry to simply split, there are many areas where the split curve match with some edges causing to fail.  
    it's a nice xenomorph torso anyway.  
    one strategy could be extract all the surfaces that the split curve touch and use the Pull command to ensure the intersection.  
    I wouldn't reccomend to have only one partition surface.

So @Pirate_Jack (Service) replied

    OK, I managed to do it 
    
    done.png671×598 141 KB
    
    I am also working on a different workflow, based on STLs, so I have one more question:  
    as per attached picture, is there any way to “pull” surface to close gaps between the surface and curves?
    
    trim.png1042×597 101 KB
    
    or maybe there are some settings in “Patch” that would create ideal patch with curve (currently curve to patch is offset as per picture 3). (patch options: sample:1, Us 100, Vs 100, Stiffnes:1)
    
    surface.png1145×704 198 KB


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