I tried different scratchers but I found a better performance when I used the same object with different angles. When you scratch the surface in one move with sharp edges its boundary is determined clearly. When you hold the object that you are scratching with with a slight angle, with the effect of your force on it, it completely pulls the paint on one side while the other side is still have some black parts. It creates a little dirty surface when you do not completely scratch but that allow you to represent the continuity of that surface. Because at some parts when you scratch the surface as a whole, intersections become unclear. Therefore in intersections I used black buffer areas to protect my scratched planes. For the same reason I had to choose what to see in panaroma picture because this technique, this contrast highlights whatever you scratch or in contrary, what you don’t.
acts of drawing 