why i cant create a hole with bool tool addon I have array of 10 sphere. With the array applied. I removed all the doubles and checked the scale of both the mesh. I tried to make a hole with the Bool Tool addon. Selecting the sphere and the mesh pressing ctrl + -(minus) key. 2 Sphere disappear and it did not cut the hole. It looks like they joined the mesh. Thanks
Geometry is too much complex.
Change Overlap Threshold in Boolean Modifier to zero.