[Flavio]

Well, today I was at the sea with some friends (and girls, you know one can't always stay at home to clean and to etch blades ) but I was thinking at the kris (I hope that the sunlight didn't hurt me too much ). Ok my next step will to etch the blade with lime as suggested, but there could be also another explanation. I have attached a sketch (to help me to explain): it is possible that in origin the blade has another kind of lamination (no twisted core), but with many and many polishings (the green portion) it's gone and now what I have it's only the inner core (the black one that you can see from the pictures of my kris). Some little portions of the green portion is still visible near the gangya. What do you think?