Is there a way to create a 3d shape by using intersecting planes? The image shows 6 planes that define an enclosed cuboid. I tried joining the planes, then using the knife tool with self-intersection, but the result did not generate vertices where three planes intersect. I know I could do it in steps by first joining the 4 vertical planes and using the knife tool, then join that to the horizontal planes and repeating, but that becomes tedious for more complex shapes.

This was done in 2.79, but I'm open to suggestions for 3.0 as well. wonky cuboid

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    $\begingroup$ This comment is probably frustrating.. but Knife (Intersect) with 'Self-Intersect' checked, and set to 'Cut' works for me in 3.0 . Maybe some tweaks necessary, where edges exactly coincide? $\endgroup$
    – Robin Betts
    Dec 16, 2021 at 7:06
  • $\begingroup$ That's actually good to hear! I'll be using 3.0 tomorrow, so if it turns out to be just a version difference, I'll let you know so you can add a reply for me to accept, thanks! $\endgroup$
    – Adam
    Dec 16, 2021 at 12:42
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    $\begingroup$ I actually ended up just extruding the faces outwards, then used a boolean modifier (union) to define the verts and edges, then deleted the unwanted faces and welded the rest together. It's not a great solution though, so I'm not adding it as an answer. $\endgroup$
    – Adam
    Dec 30, 2021 at 20:45


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