When I extruded vertices in edit mode, for some reason one of the sides of my 3-D model (the textured-looking side to the right) is creating a lot of errors.

First off, it automatically sets extrusions on the x-axis.
Secondly, it doesn't allow me to extrude planes into 3-D shapes.
Thirdly, I can't increase the height of vertices without it creating a new face.
Finally, it renders those automatic textures to create a grainy black texture in render mode.
I attached an image with the solid object (top) and the rendered object (bottom).

Note: I did not set any textures or alter the lighting on the model. Also, the left gray side is working perfectly fine without errors.

enter image description here


First, the "grainy black texture" is z-fighting. Some where you have overlapping faces.

The automatic extrusions on the x-axis is from the normal value of the face you are extruding from. You can after hitting E press Z and that will disable the guide along the normal.

I'm not sure what you mean by "it doesn't allow me to extrude planes into 3-D shapes." If you select a face in face select mode(change the selection mode with CtrlTab) then press E you will have a 3D shape.

  • $\begingroup$ Thank you so much for your help! Deleting the extra vertices solved the problem and got rid of the z-fighting. (: $\endgroup$ – Toshi Jun 3 '14 at 17:19

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