Hand Forged Japanese Samurai Katana Candle Dragon High Manganese Steel Blade blackening processManganese steel forging bending 90 degrees without deformation, the knife body ancient method of blackening process processing. The edge of the whole hand [linear push grinding research white] processing hardness up to 60 cutting iron does not hurt the edgeManganese steel forging bending 90 degrees without deformation, the knife body ancient blackening process processing. The edge of the whole hand [linear push grinding research white] processing