/ Mjölnir can be crafted with the following recipes

Player Recipe
magiclysm Primary skill used: fabrication(10)
Required skills: spellcraft(7), bashing(6)
Time to complete: 1200 minutes
Tools required:
> 1 tool with hammering quality of 3
> 1 tool with chiseling quality of 3
> pair of metal tongs
> anvil
> swage and die set
> electric forge (60 charges) OR acetylene torch (60 charges) OR electric arc furnace (30 charges) OR charcoal forge (60 charges) OR basecamp forge (60 charges) OR demon forge (60 charges) OR rock forge (60 charges)
Components required:
> 1x war hammer
> 1x gold
> 2x silver
> 1x rebar
> 2x orichalcum ingot
Byproducts:
(none)
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This recipe can be found in the following books when fabrication is at least the required level:
The Weapons of Asgard and Beyond (level 10)