havent used it for cutting tatami mats or anything but paper tested it and its got a good edge. fittings are nice and tight and the blade is beautiful with the folding lines and the hamon. the habaki is well fitted to the blade and beautifuly marked.tsuba and tsuka are well finished. tsuka ito is reasonably tight. the saya and sagea are beautifuly finished.it is sent well oiled so it wond arrive rusted. and the sword fits into the saya incredibly nice and snug especialy for a sub £2000 (seen many with terribly lose fitting). thesword its a stunning piece of art that i will love for years to come.