This question is pretty much identical to this post, but I just made this account and cannot seem to comment on other posts yet, so I had to make a new one.

In short, I've been trying to do very simple boolean subtractions, and it looks fine in the Blender viewport, but when exporting I end up with a mesh with distorted faces.

For example, the following Arch was made with a cube primitive, cylinder primitive, and the Boolean Difference modifier applied to the cube with the cylinder selected as subtracting object:

Simple Archway Made with Boolean Difference

However, when I export in either the .obj or .fbx file formats, I get the following in the Windows 3D Viewer:

Distorted Archway Export

For the record, I am making sure to apply the modifier, and I deleted the leftover cylinder after applying the boolean modifier.

I initially experienced this on Blender 2.93, so I downloaded the latest version to see if the issue was fixed by an update. I am now on Blender 3.0.0 and I'm still experiencing the issue. Currently on a Windows 10 Enterprise 64-bit machine. Any help/guidance would be appreciated, and please let me know if there's any other information I can provide.

  • $\begingroup$ did you try to add a triangulate modifier in blender before exporting yet? $\endgroup$ Jan 14 at 18:35
  • $\begingroup$ I forgot to try that (mostly because the original post had tried it and it didn't work, so I'd written it off in my head), and it worked like a charm! Thank you very much! $\endgroup$ Jan 14 at 19:22
  • $\begingroup$ don't worry, you're welcome $\endgroup$ Jan 14 at 19:23

1 Answer 1


Thank you to Marten Zander for pointing this out; adding the triangulate modifier to the object after applying the Boolean Difference modifier solves the export issue completely!


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.