/ nodachi can be crafted with the following recipes

Player Recipe
Primary skill used: fabrication(10)
Required skills: N/A
Time to complete: 540 minutes
Tools required:
> 1 tool with grinding quality of 2
> 1 tool with anvil quality of 3
> 1 tool with hammering quality of 3
> hotcut
> electric forge (400 charges) OR acetylene torch (400 charges) OR electric arc furnace (200 charges) OR charcoal forge (400 charges) OR basecamp forge (400 charges) OR demon forge (400 charges) OR rock forge (400 charges)
> metal fileset OR pair of flatjaw tongs
Components required:
> 3x plank OR 6x stick
> 3x fur pelt OR 3x leather patch
> 5x lump of steel OR 20x chunk of steel OR 100x scrap metal
Byproducts:
(none)
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This recipe can be found in the following books when fabrication is at least the required level:
The Swords of the Samurai (level 8)