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There are two meshes that are clipping into each other.

enter image description here

I used the boolean modifier to subtract the cylinder from the wall object. How do I fix this problem?

.blend file

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  • $\begingroup$ If you could upload your blend file here I could take a look at it. Also you can upload your image directly to the question. Or if you don't the file host imgur is preferred. $\endgroup$ – Vader Dec 24 '14 at 8:02
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If you are referring to what can be seen in the image below, this is called z-fighting. It is when to surfaces overlap and are in the same 3d space. This is not physically possible in the real world.

enter image description here


To fix this you would have to get rid of one of the overlapping surfaces.

  1. Select the object Cube

  2. Select the faces that are overlapping.

enter image description here

  1. Delete them, x -> Faces

Final Result

enter image description here

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Comrade's answer is good. If you want to keep both meshes intact, there is an alternative way.

  1. Select the Cylinder.001 object
  2. Scale the object by hitting s
  3. Scale it down by an appropriate amount. You can try .99 to start. Keep adding 9's until you see z-fighting happening again. If so, hit the backspace to erase the last digit.
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Other solution would be to join both objects (In object mode select both and press CtrlJ)

Then go into edit mode, select all the vertices and do Remove Doubles.

enter image description here

enter image description here

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