Hi Martin, re: naked edges - that's a good description but maybe a bit simpler way to describe it is a naked edge is when an edge belongs to just one single surface rather than being joined between 2 surfaces.

It's not automatically an error to have naked edges - if you just draw a simple rectangular plane using Draw solid > Plane, that will have 4 naked edges which is normal and expected because it's just a single surface and not joined to anything yet.

But if your object is supposed to be a watertight solid, that's when there are not supposed to be any naked edges and you can use that script to find areas where things are not joined properly, either because of an unexpectedly large gap between edges leaving a hole there, or sometimes due to some kind of bad trimming boundary like one that criss-crosses over itself or has an edge squeezed down to a single point or some various things similar to that.

So anyway if you have a goal to make your object a finished solid and it does not show as "Solid" in the object type indicator in the properties panel, that means it has some naked edges in it which you can use that script to locate. Those areas then usually need some repair work on them.

- Michael