Moreover, although ironware manufacturing by forging was introduced to the Setouchi region by the end of the Yayoi period, technology was clearly lower than that of northern Kyushu and ironware manufacturing by cold chisel cutting was practiced in general.
瀬戸内地方でも、弥生時代後期までには鍛造による鉄器生産が伝播していたが、技術的には北部九州のそれよりも明らかに低い水準にあり、同時に鏨切りによる鉄器製作も普遍的に行われていた。