Why i cant punch a hole through the mesh? With the BoolTool Addon why i cant punch a hole. Why its making a groove. I check the orientation of both the faces. Scale and rotation are also 1 and 0. Any suggestion whats going wrong. Thanks
This is essentially a shading issue: use autosmooth in the property panel. That will avoid the rendering to be annoyed by the normals of the faces created by the boolean.

To fix the little tube that goes bad, just shift it a bit.
Also the tubes are opened at the bottom. They should be closed.