Dennis,
so for you with these selected surfaces :
we couldn't have this result (surface A sliced) ?
By "insert a vertex at A and B" I meant slice both beginning and ending surfaces ... You seem to think that this would not be possible, I suppose there are good reasons for that (unfortunately I know nothing in TCL programming :roll: ).
But even in that case, it would save a lot of time inserting vertices, selecting vertices, slicing surfaces
I think I only need this kind of plugin for quads ...
I can't imagine how it would work with triangles.
I've played a bit with your 2 models coming with version 6 ... very very nice job you've done.