😄 ok, so first, component mean that you scale each object by itelf, so if you would have two cubes they would enlarge independently on each other. With edge it will work only in one direction as the edge does not have other dimension. So in this case you can use just world (orientation of the scene) or object (orientation of the object depending how you move with it) You scaled the polygon too much so it went over the object.. Component mode should work for the polygon to scale. Also make the edges over the whole model, not just on the one half, you will have some problems when you will be adding edges for smoothing Its a questions of time and experience to know what you will need to make the shape you want… But If boolean works for you, go with that 🙂
