Sword maintenance of common sense

Sword generally consists of three components: blade, sheath, and accessories. The main body, blade, is mostly iron, steel, copper. The sheath is made of wood. In order to avoid getting rusted, it should not be stored in damp place nor contact with sour, salty substances. Hand touch should also be avoided in case the surface got corroded by sweat. Oil should be applied on surface for maintenance for medium carbon steel, high carbon steel,pattern-welded steel(Damascus steel)material stainless steel blade.