Ilmarinen (pronounced [ˈilmɑrinen], also known as Ilmari and takoja iänikuinen or "the eternal hammerer"), a blacksmith and inventor in the Kalevala, is a god and archetypal artificer from Finnish mythology.[1] He is immortal and capable of creating practically anything, but is portrayed as being unlucky in love.[2] He is described as working the known metals of the time, including brass, copper, iron, gold, and silver. The great works of Ilmarinen include the crafting of the dome of the sky and the forging of the Sampo. His usual epithet in the Kalevala is seppä or seppo ("smith"),[3] which is the source of the given name Seppo.[4]