@dArkus_Orion That wouldn't work on any sword, although Japan has worse quality iron, pattern welding can solve most of that so they are generally on par with western swords. https://www.youtube.com/watch?v=W8a7gpoSPbY&list=PLMUtS78ZxryO9NKU_ceM-LhcnSnAc2kHV&index=21&t=0s