Bear in mind, I am quite new to blender.

I've run into a problem. I'm trying to model a head and I'm creating the vertices and faces, but when I move some vertices another one snaps to a completely unrelated position. Here are some images highlighting the problem:

enter image description here

enter image description here

All I did in there was move the selected point a little bit back along the y axis.

Do any of you know why this is happening and how to fix it? I really need help on this.

  • $\begingroup$ Transformation orientation, modifiers or snapping could be the problem here or something else, a bit difficult to say going on images alone. Can you share the blend file at the time of posting this. $\endgroup$
    – iKlsR
    Commented Sep 29, 2013 at 19:51
  • $\begingroup$ Do you have any modifiers on? Shrinkwrap or Mirror could cause it. $\endgroup$
    – CharlesL
    Commented Sep 29, 2013 at 19:53
  • $\begingroup$ iKlsR: I'm not entirely sure where to upload that, does this site have a dedicated file sharing system? Or maybe a preferred third party? CharlesL: Nope, no modifiers. I thought it was mirror doing it, but when I removed it there was no change. $\endgroup$ Commented Sep 29, 2013 at 19:58
  • $\begingroup$ @CustardCrusader just use a file sharing service. Dropbox etc. Also, do you by any chance have snapping enabled? Look in the bottom header for a little magnet icon. Is it red? $\endgroup$
    – iKlsR
    Commented Sep 29, 2013 at 20:00
  • $\begingroup$ iKlsR: No, snapping's off, tried that too. Here's the file: dropbox.com/s/haxj89bht5f0rkp/… $\endgroup$ Commented Sep 29, 2013 at 20:04

1 Answer 1


You have X Mirror enabled. Open the toolself with T and untick it, it's under Mesh Options. What this does is that it will try to mimic whatever you are doing on one side of your mesh on the other.

enter image description here

From the wiki.

The X-mirror option of the Mesh Options panel allows you edit both “sides” of your mesh in a single action. When you transform an element (vertex, edge or face), if there is its exact X-mirrored counterpart (in local space), it will be transformed accordingly, through a symmetry along the local X axis.

This didn't affect the mouth area of your model as only half of it was modeled while you had a complete eye ring.

  • 3
    $\begingroup$ Seems like such an insubstantial thing... Thank you so much, this place seems to have a great community. $\endgroup$ Commented Sep 29, 2013 at 20:15

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