I am currently trying to apply Intersection Boolean Modifier on a Superman model with a Plane.

enter image description here

It works fine for most of the plane positions but at that point on the picture, it cuts all parts and doesn't find any intersection.

I also tried to apply triangulate modifier to plane, solidify modifier to model, removed doubles and recalculated normals but the result still was not satisfying. (I can actually can do it with knife tool but since I am trying to do this operation via python script, knife tool cannot help me I think)

Here is the blend file :

  • 2
    $\begingroup$ The meshes used in the Boolean modifier should both be manifold for consistent results. Try adding a Solidify modifier to the plane so that it has at least some depth. $\endgroup$ Feb 12, 2017 at 11:49
  • $\begingroup$ I should apply solidify modifier to the model right? I did it and just a little part of the intersection became visible (other intersection regions still unchanged) $\endgroup$ Feb 12, 2017 at 12:10
  • 1
    $\begingroup$ To the plane - both meshes have to have some volume as the Boolean works on the intersection of the volumes. $\endgroup$ Feb 12, 2017 at 12:32
  • $\begingroup$ Have you tried bpy.ops.mesh.knife_project in Python? $\endgroup$
    – lemon
    Feb 12, 2017 at 14:24
  • $\begingroup$ adding volume to mesh works better but there are few extra vertices that are misplaced. (Thanks:) ) Also I don't know how to specify the mouse location and draw the line from the script. (Thank you though :) ) $\endgroup$ Feb 12, 2017 at 16:07

1 Answer 1


The meshes used in the Boolean modifier should both be manifold (fully enclose a volume) for consistent results as the modifier works based on the volume enclosed by the mesh. Adding a Solidify modifier to the plane will give it thickness so that the modifier has some volume to work with.


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