National Intangible Cultural Heritage, Republic of Korea Ipsajang refers to the skill of inlaying ornamental silver or gold string into a groove made on a metal surface, or to an artisan with such a skill. Objects made with this skill were among the relics unearthed from the sites of Lerang dating from the 1st or 2nd Century BC and from Silla (circa 57 BC – 935) tombs. There are two ways of making this ornamentation. One was a method which started during the Goryeo Period (877 – 1394) of inlaying ornamental silver or gold string into a groove made with a chisel on a metal surface. The other, which started toward the mid-Joseon Period (1392 – 1910), was to make a figure on a metal surface using a chisel, and fit thin silver/gold pieces into the space by striking with a hammer. The patterns thus made were chiefly apricot, orchid, chrysanthemum, bamboo, crane, deer, bat, tiger, and pine.

Blacksmithing includes a variety of techniques, including casting, welding, copper embossing, thread inlay, steel engraving, and double-engraved silver. Blacksmithing is inseparable from nomadic pastoral cultures, and is one of the wonders created by the nomadic pastoralists of Mongolia. The steel hearth, fire tongs, and other household tools are made by blacksmiths. Since ancient times, Mongolian artisans have made weapons and other army equipment, as well as tools and instruments, in a communal manner, meaning that blacksmithing workshops are found in many different sites in Mongolia. There are famous designs and schools of blacksmithing, such as Dariganga, Noyon Sevrei and Archuul, and although the artisan creates his work according to customary designs, one can find individual styles in their works. Traditionally, Mongolian artisans transmit their knowledge to the next generation through a master-to-apprentice way. In this method, the master becomes both a parent and teacher for the apprentice.