Ilmarinen

Ilmarinen is the Finnic god and archetypal smith who forged the dome of the sky and the Sampo, and in the Kalevala he is the blacksmith-hero (seppä) who forges the Sampo as the bride-price for the daughter of Pohjola and later makes a golden bride. Scholars take him as the successor of the older West Uralic sky god and as a wind god, roles later partly taken over by Ukko, while the epic keeps him as the maker of impossible things. The loss of the Sampo in the epic is the parable attached to his craft: what is forged for possession is not kept.

Ilmarinen is called at the bench and the forge: the first work of a new tool, iron and beer, and the discipline of making a thing properly rather than quickly. The practice is craft itself, and the sky dome is remembered in the smith's claim that the work is as large as the world.