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After applying a boolean modifier on a cylinder by using another cylinder as the object, I get the desired hole in the middle, but it created a couple of weird diagonal edges on the top and bottom of the cylinder. So I deleted those 2 edges and then bridged the inner and outer edge loops of the cylinder. This creates a lot of faces on the side which I don't want. I only want the entire side to have one face. So I select all the faces of the side and right click -> Dissolve faces. Nothing happens. But if I leave just one face and select all the others, they get dissolved into a single face. This leaves the cylinder side with a big face almost 90% of the area, and a tiny face. Why is this behavior happening and why can't I make all these faces fuse into one face?

Blender File: https://drive.google.com/file/d/1AMBAPwqIRFiHb8VcnxYNLBCyvj2Uf5dD/view?usp=share_link

enter image description here

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  • $\begingroup$ Hello and welcome. You mean you want the whole thing to be 1 face? You cannot have holes in faces in blender. Read docs.blender.org/manual/en/latest/addons/3d_view/… $\endgroup$
    – Harry McKenzie ♦
    Commented Apr 19, 2023 at 7:29
  • $\begingroup$ If you create a hole within a face you need at least 2 edges to connect the inner edge to the outer edge $\endgroup$
    – moonboots
    Commented Apr 19, 2023 at 8:04
  • $\begingroup$ @HarryMcKenzie and moonBoots Thank you very much guys. You are right. For whatever reason, I can't see the arrow so sadly cant upvote your comments. $\endgroup$
    – Mr.Coder
    Commented Apr 23, 2023 at 1:45

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As pointed by Harry and moonboots in comments, this is the answer if anyone needs it:

You cannot have holes in faces in blender because if you create a hole within a face you need at least 2 edges to connect the inner edge to the outer edge. Read Blender docs about this.

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