Reply To: Extrude Problem
Here is your file back.
You should not have faces with more or lesser than 4 vertices. Sometimes you can’t avoid tris (faces with 3 vertices) or n-gons (faces with more than 4 vertices) but make always faces with 4 vertices as you can.
You are working in ‘Perspective’ mode, better to work in ‘Orthographic’ mode. Toggle 5 on the numpad to switch between them. You can see that in the left top corner of the viewport.
For the mirror to work properly you have to apply the rotation. The rotation values in the ‘n’ pannel in object mode have to be ‘0’ or the mirror goes wacko. You can apply the rotation (set values to zero) by pressing Ctrl + A and select ‘rotation’
