# Why can I not put an edge loop around this model?

I am unable to add an edge loop around the outer edge of this model (around the rim), and it is driving me crazy trying to work out why.

• All faces in the model are quads (verified with Select Faces By Sides);
• I have removed all doubles;
• The relevant faces seem to be connected (verified by dragging them about).

Despite the above, you can see that any edge loop will only go through 6 faces and stop.

I made the object using mirror and array modifiers. I expect this is reason, but I cannot explain the persistent effect now that the modifiers have been applied.

I'm sure this is embarrassingly obvious, but I am clueless.