I added a mirror modifier along the X axis. Then I added some vertices on the mirrored axis. I tried to extrude a vertex along the X axis, but it didn't work. I am able to extrude along the other axes, but not along the X axis. How can I fix this problem?

  • 2
    $\begingroup$ Does it work if you disable Clipping in the mirror modifier? $\endgroup$
    – gandalf3
    May 5, 2014 at 8:53
  • 2
    $\begingroup$ Yes it does. Thank you. Please write it in answer section, I will mark it as answer. $\endgroup$
    – quartz
    May 5, 2014 at 10:02

1 Answer 1


When clipping is enabled, any geometry exactly along the mirror axis will not be allowed to move. If you disable it, then you can extrude and move center vertices.


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