Talkirc, I didn't reply early, because I was enjoying this discussion. :) As I see, all world of Atys is full of surprises, and crafting, is a patiente game. I didn't achieve my goal yeat, but I think I know the answer, with your hints and help. Now, like any profession that requires patience, nothing to do, as we do with science, with the old game "trial and error" until we get the results and answers that we want. Thank you all guys.