Hi,
I am trying to figure out why boolean a ‘thin’ object is working correctly in on e scene and not in an other.
i want to cut out a cylinder, and leave the inner part.
As you can see in the examples, it is working in one scene but not in the other although they are similar setups ;-S
Anybody know if there a setting for this to happen?
(edit: added the blend files)
I tested and concluded that only if you delete the face that is facing towards X+ causes this. I would consider this a bug.
I checked known limitations of boolean operation. There says:
Boolean operates best on water-tight meshes, where inside/outside is clearly defined.
The following characteristics are known to give bad output.
- Open volumes.
- Overlapping geometry.
- Self-intersections.
- Zero-area faces.
While they may not fail in all situations, they aren’t guaranteed to work properly.
ha, yes, that is indeed an ‘issue’. when I close the open side of the cube and delete some faces on the other side it is working 
Try
Increase the resolutions of the both models
Play with the overlap threshold
It is normal sometimes that the intersection testing between relatively large polygons fails.
