Hi simba, I see that there are a lot of curve objects in your file with the curves sitting right on top of edges - that can be problematic because for N-sided to work you need to select edges, not just curves. So try hiding or deleting those curves first and that may help.

Also another thing that can cause n-sided to fail is if the edges do not touch each other at endpoints, like if there is too much of a gap between them. It looks like you have this problem in some areas of your model, like for example here there seems to be a gap of around 0.03 units in size, that's too large and it makes NSided not recognize the chain of edges as a closed loop:





- Michael

Interesting discussion. Nsided is a tool I hadn't used before.

I am running into these tiny little gaps all the time, I haven't figured out why.

Hi simba, usually it means some of the initial construction curves were not quite meeting end-to-end.

One thing to watch when you're initially drawing things is that you're getting the "end" snap points on things, not just any other snap point like "perp" that happen to be nearby the end points.

- Michael