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I'm modelling my first car in Blender, a Porsche 911, and am starting detail work on my base model. I am trying to boolean out a hole so that my tail lights can sit just behind the mesh, just like the real car:enter image description here

But when I make a shape to boolean and add the modifier, I get a weird result like this: enter image description here

I'm not sure why this happens, and have spent about an hour trying to fix it. I thought it might be due to the order of my modifiers, but have tried changing them and it didn't help. Maybe it is just my bad topology?

Any ideas on how to fix this would be greatly appreciated.

Here is the blend file if you want to have a look:

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I just moved around your boolean in the Y-axis and changed the Boolean Difference Solver to Fast.

enter image description here

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  • $\begingroup$ I've tried doing that but didn't change anything for me. Maybe its because I'm using Blender 3.1 instead of 3.2? Ill download the newest version now and see if that makes any difference. $\endgroup$ Commented Jun 22, 2022 at 3:13
  • $\begingroup$ I'm using Blender 3.1. I'm new here in Blender Stack Exchange so I don't know how to upload the file I fixed. $\endgroup$
    – gjove
    Commented Jun 22, 2022 at 6:03
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The normals of the boolean object are inverted, go in Edit mode, select all and press ShiftN to recalculate.

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