Weird thing with mirror modifier

Support Modeling
1

I was working on a 3d model of a character I’m designing, I used the mirror modifier, then decided to sculpt it a little so I used subsurf, these are the before subsurf and after subsurf shots, does anyone know what’s going on and how to fix it?

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2

Make sure the mirror modifier is above the subsurf. They are applied in the order from top to bottom. You want to subsurf a mirrored mesh, not mirror a subsurfed mesh.
Things to check to solve 90% of subsurf problems.

  • Delete any faces that may be hidden inside the mesh
  • Remove any doubles, select all vertices, W / remove doubles
  • Reset any axis scaling changes with Ctrl+A in object mode
  • Make sure all your faces normals are pointing correctly with Ctrl+N.
3

I did all the things you said, and I applied the mirror modifier before the subsurf, but it still comes up like that. Also when I recalculate normals, it does all this weird stuff but no matter how many times I do it, it doesn’t look right.

4

If it still looks the same it means that you have internal edges/faces or multiple vertices in the same spot.

5

How would I be able to tell if there were?

6

Thanks for all your help, I figured it out, I had faces on the inside of the model created by the mirror modifier for some weird reason, I go it sorted out now. Thanks again,

Astrauk