I have the same problem like this: Boolean Issue: hole in mesh is.... strange

I need to cut a hole in a cube. I'm trying to use a Boolean modifier.

It doesn't cut but extrude actually a hole from the cube.

I'm in Blender 2.8. So there is no Solver option in Boolean modifier.

How is it better to cut a hole in a cube in 2.8?

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  • 1
    $\begingroup$ Make the cube manifold by filling in its missing faces. $\endgroup$
    – Leander
    Jun 8, 2020 at 5:23
  • $\begingroup$ ^ Solidify modifier is one of the approaches for that. $\endgroup$ Oct 25, 2020 at 1:17

1 Answer 1


I went through the manual and found that it is supposed to work that way. you can instead go to user preferences and tick the loop tool add-on.

then subdivide the surfaces -> select the faces you want -> edit on the side panel -> loop tools drop-down -> click on circle -> later you may delete those faces. Add more subdivisions if you want a more accurate circle or add a subdivision modifier(you might want to clean up a bit by adding edge-loops.

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