Split surface Fails even with intersections

Rhino Rhino for Windows
1

Hi All

Can anyone help me with this issue here? I have 2 sufaces that intersects each other clearly and yet I cannot split them ( in this case I want to split the curve bottle neck with the body).

Many thanks!
Regards
split problem.3dm (2.4 MB)

2

Hello - two things jump out at me -

  1. Tolerance in the file is .1 - it’s generally best to model at .01-.000001. See
    https://wiki.mcneel.com/rhino/faqtolerances

  2. The neck still has the full underlying surface of the bottle - turn on control points to see that. So ShrinkTrimmedSrf then split.

-Pascal

3

Hi Pascal
Thank you so much, after increasing the tolerance and shrinking the surface worked for me.

Why would Rhino refuse to trim/split if I did not shrink the surface (which sometimes produces cracked up surfaces if I try to trim or split )

much appreciated
Ed