I have the following 2d geometry (the figure shows it in edit mode):

enter image description here

I need to make it a simple polygon, without the overlapping faces and the non-necessary edges (just want to keep the ones of the perimeter and holes).

How can I do that in Blender?

I've tried this solution but didn't work, also I've tried the options of dissolving vertices/edges/faces but didn't work either.


1 Answer 1


If you are on 2.79, you could use the TinyCAD addon:

  • Make sure that all your planes are on the same level on the Z axis, if not select all and press SZ0.
  • Keep everything selected and press W > TinyCAD > XALL
  • Only the edges remain, press W > Remove Doubles.
  • Delete the useless vertices with X > Vertices.
  • Fill the faces with F.
  • If you want to keep a central hole you need to have enough topology.

enter image description here

  • $\begingroup$ Thank you! I followed your steps and now I have a clean polygon. The only problem is that I lost the holes (the big square in the center and the rectangle and small square in the upper part). Is there any way to keep the holes in the geometry? $\endgroup$
    – revy
    Feb 10, 2019 at 16:20
  • $\begingroup$ I've edited my answer, if you want to keep a central hole you need to have enough topology. $\endgroup$
    – moonboots
    Feb 10, 2019 at 16:54

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