Trimming, splitting, and booleaning surface commands not working

Rhino Rhino for Windows
1

Hi there,

I’m struggling to figure out why using the split command worked on one area of my surface, but failed to work on another. Is there something I am missing? is it a bug? or do I need to change something in my settings?

Thanks in advance

rhino forum - no split.png1073×793 69.3 KB

2

@milosutter, hard to say from an image, my guess is that curve was not closed before you extruded into your cutter polysurface. Run _SelClosedCrv to find out if the curve is closed. If it is not selected, use _CloseCrv, then trim or split.

c.

3

Thanks for the reply. It is closed; I’m still perplexed as to why I can’t split!

4

Can you post your file containing the problematic objects ?

c.

5

Right. Thanks -
150804_Brunette_split surface struggle1.3dm (515.3 KB)

edit: also need to change transparency of the surface
( Changing transparency on a hatch )

6

Select your cutter object, then run _ShowEdges. The cutter is not closed. Close it along the two vertical naked edges, eg. by lofting a surface between them, join it with the cutter and split will work.

c.

7

Thank-you so much! that was the exact problem.
-M