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I can't subdivide the front face in a model. I want to put more materials on the model, I used a Boolean modifier, and caused triangle faces. I don't know if that makes any difference but I need to subdivide it so badly it's getting on my nerves.

Thank you

Here's a picture of the model enter image description here

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    $\begingroup$ it's probably because it's an ngon,try subdividing manually with the knife tool $\endgroup$ – user2816 Jul 9 '16 at 18:14
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    $\begingroup$ Big ugly n-gon... Delete it, select then the vertices on the edge and do grid fill to go create quads. $\endgroup$ – cegaton Jul 9 '16 at 18:30
  • $\begingroup$ Do you mean the whole object or the face $\endgroup$ – hamzah hajmousa Jul 9 '16 at 19:22
  • $\begingroup$ Related - blender.stackexchange.com/questions/53130/…. To be able to subdivide face there, you need another kind of topology in that region. It's up to you what method to use for that - either deleting face and recreating with GridFill or splitting existing face with Edge tools. $\endgroup$ – Mr Zak Jul 9 '16 at 20:05
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    $\begingroup$ Boolean modifier does not ensure a "good" inner geometry. In particular when the initial mesh is already dense (as yours seems to be). To me this modifier is often a false good idea when this kind of consequences are not known in advance. As @cegaton said, the best is to delete the face and try a grid fill. $\endgroup$ – lemon Jul 9 '16 at 22:21
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Boolean operations are a convenient way to transform geometry, but they can leave behind other problems. In this case you've generated a big and ugly n-gon (a polygon with more than 4 vertices). Ngons are notorious for deforming in unpredictable or undesirable ways. In general is preferable to work with quads.

enter image description here

Start by getting rid of the ngon

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select the edge loop by pressing Alt while slecting an edge.

enter image description here

Press the space bar and type grid fill (or press CtrlF and select grid fill)

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And play with the grid fill settings until you get something that does look like a grid.

enter image description here

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Looks like an N-Gon.

To check if a mesh has N-gons do the following.

  • In edit mode go to face selection
  • Choose select from your 3d menu bar
  • Select All by trait
  • Select faces by sides
  • In the tool panel set the number of sides to 4(its at the bottom you may have to scroll to see it)
  • set the type to greater than

This will show you any face that has mort then 4 sides

Hope it helps

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