With all due respect, in my modest forging knowledge, curving in such way a blade already fullered, presents a great deal of difficulty. The problem is not no make the curve, but the metal in the outside of the curve strechtes and the inside make wrinkles, as the metal is shrinked, even in hot. So, the form of the edge, the fuller and the back must be reshapen, and the blade tempered again, grinded and polished. I wonder if this can be made on a blade already finished, and without extra material to work and expend. I would love to learn how can this be made, as my knowledge on this matter is not sufficient.
Regards
Gonzalo
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