# Loop-cut won't go all the way around

Alright so I've seen some postings about loop cuts and done some research. I am very new to blender and modeling overall. I am trying to loop cut this concrete barrier. Now I'm following a tutorial and kind of did my own thing in some areas. I cleaned it up following some instructions in another answer here on stack exchange.

I can't for the life of me figure out why I can loop cut around the whole bottom:

...but not the whole middle:

I see this marked as answered by another question. That question refers to ngons and inside faces. Now once again I'm totally new to this. I looked on the inside. I don't believe I have inside faces or any ngons by the terms I've read online in my research.

Here is a wireframe picture and the inside view:

Maybe I'm missing something the answers on other posts are saying. If so and you know what it is I'd be very appreciative of what it is.

• See the first answer on the other post. You have a ngon on the bottom of your mesh. – iKlsR Oct 17 '14 at 4:21
• Just tried removing that ngon because I realized it. It has no effect on the loop cut for the area I'm trying to work on. Any ideas? – CrazyGrunt Oct 17 '14 at 4:38
• I initially marked as a duplicate of this since the answer is on the other question but since you are new, I think this could get an answer. – iKlsR Oct 17 '14 at 4:40
• – gandalf3 Oct 17 '14 at 6:19
• – gandalf3 Aug 27 '15 at 8:57

• It depends, in this case, it was hidden as it was right on top of the other, I noticed because the edge cut stopped there instead of the large bottom face. Additionally, you can sometimes use W > Remove Doubles to check for and clear these. – iKlsR Oct 17 '14 at 5:09